Try adding  <add name="Session" type="System.Web.SessionState.SessionStateModule"/> to the <httpModules> section.

See: http://community.countersoft.com/forums/post/536.aspx

This line was already in my machine.config file.  Should I add it somewhere else?  I have tried everything mentioned in the thread you referenced, and I still get this error.

If it helps, here is my web.config file:

<?xml version="1.0" encoding="Windows-1252" ?>
<configuration>
 <configSections>
  <sectionGroup name="GeminiPlugins">
   <section name="MailPlugin" type="System.Configuration.NameValueFileSectionHandler,System,Version=1.0.3300.0,Culture=neutral,PublicKeyToken=b77a5c561934e089" />
  </sectionGroup>
  <section name="nhibernate" type="System.Configuration.NameValueSectionHandler, System, Version=1.0.5000.0,Culture=neutral, PublicKeyToken=b77a5c561934e089" />
  <section name="microsoft.web.services2" type="Microsoft.Web.Services2.Configuration.WebServicesConfiguration, Microsoft.Web.Services2, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
 </configSections>
 <!-- **************-->
 <!-- **************-->
 <!-- Gemini application settings go here -->
 <!-- **************-->
 <!-- **************-->
 <GeminiPlugins>
  <MailPlugin>
   <!-- SMTPServer - specify IP number or machine name -->
   <add key="SMTPServer" value="mail" />
   <!-- SMTP authentication values: OFF, BASIC, NTLM. -->
   <add key="SMTPAuthentication" value="OFF" />
   <add key="SMTPUserName" value="" />
   <add key="SMTPPassword" value="" />
   <!-- Global email alert type on/off settings -->
   <add key="IssueCreateAlert" value="true" />
   <add key="IssueUpdateAlert" value="true" />
   <add key="IssueCommentAlert" value="true" />
   <add key="IssueStatusChangeAlert" value="true" />
   <add key="IssueResolutionChangeAlert" value="true" />
   <add key="IssueDeleteAlert" value="true" />
   <add key="IssueAssignedAlert" value="true" />
   <add key="IssueClosedAlert" value="true" />
   <add key="IssueResolvedAlert" value="true" />
   <add key="IssueWatcherAlert" value="true" />
   <!-- Options -->
   <add key="FromEmailAddress" value="gemini@epicrx.com" />
   <add key="Debug" value="false" />
   <add key="SendAlerts" value="true" />
   <!-- Email encoding values: ASCII, DEFAULT, UNICODE, UTF7, UTF8. -->
   <add key="Encoding" value="UTF8" />
   <!-- TemplateEngine values: NVELOCITY, STRINGTEMPLATE -->
   <add key="TemplateEngine" value="NVELOCITY" />
   <!-- TemplatesPath: Optional setting that can contain absolute path to "templates\mail" folder
     - leave empty to let Gemini work it out
     - or, specify full path , e.g. "c:\inetpub\wwwroot\gemini\templates\mail\"
   -->
   <add key="TemplatesPath" value="" />
  </MailPlugin>
 </GeminiPlugins>
 <nhibernate>
  <!-- The SQL Server dialect (Gemini supports "MsSql2000Dialect" or "MsSql7Dialect") -->
  <add key="hibernate.dialect" value="NHibernate.Dialect.MsSql2000Dialect" />
  <!-- The SQL Server database connection string -->
  <add key="hibernate.connection.connectionstring" value="data source=elaine\gemini;initial catalog=Gemini;user id=**;password=****" />
  <!-- Misc -->
  <add key="hibernate.connection.provider" value="NHibernate.Connection.DriverConnectionProvider" />
  <add key="hibernate.connection.driverclass" value="NHibernate.Driver.SqlClientDriver" />
 </nhibernate>
 <appSettings>
  <!-- OrganisationName - Name of your organisation -->
  <add key="OrganisationName" value="EPIC Pharmacy Network (EPN)" />
  <!-- RegisteredTo - The email address of whom the product is registered to -->
  <add key="RegisteredTo" value="kprestage@epicrx.com" />
  <!-- RegistrationCode - The product registration keycode as provided by CounterSoft -->
  <add key="RegistrationCode" value="****" />
  
  <!-- FullGeminiURL - requires trailing forward-slash! -->
  <add key="FullGeminiURL" value="http://elaine.richmond.epn/gemini/" />
  <!-- GeminiAdmins - Email address for Gemini administrators -->
  <add key="GeminiAdmins" value="kprestage@epicrx.com" />
  
  <!-- WelcomeTitle - Commercial Licensees only !! -->
  <add key="WelcomeTitle" value="Welcome" />
  <!-- WelcomeMessage - Commercial Licensees only !! -->
  <add key="WelcomeMessage" value="Customise this message via the WEB.CONFIG file." />
  
  <!-- DateFormat - "EU" or "US" -->
  <add key="DateFormat" value="US" />
  <!-- TimeInWorkingDay - specify as HH:MM (example "7:30" which equals 7 hours 30 minutes) -->
  <add key="TimeInWorkingDay" value="7:30" />
  
  <!-- WebServicesAccessCode - Security code that must be used when using Gemini web services -->
  <add key="WebServicesAccessCode" value="ABC123" />
  <!-- WinWebServicesAccessCode - Security code that must be used by Gemini Desktop application -->
  <add key="WinWebServicesAccessCode" value="WIN123" />
  <!-- UseAccessCodeForSourceControl - Should we authenticate access to the AddSCFile.aspx? -->
  <add key="UseAccessCodeForSourceControl" value="NO" />
  
  <!-- GlobalAssignResourceAtIssueCreation
    - Controls if ALL USERS can assign resource to an issue during issue creation
    - Possible values = "YES" or "NO"
    - If this is set to YES, then ANY USER can assign a resource to an issue during issue creation
  -->
  <add key="GlobalAssignResourceAtIssueCreation" value="NO" />
  <!-- AutoAlertForIssueCreator
    - Controls if the user creating an issue is automatically an ISSUE WATCHER (get issue alerts)
    - Possible values = "YES" or "NO"
    - If this is set to YES, then alerts will be sent to issue creators whenever the issue is updated
  -->
  <add key="AutoAlertForIssueCreator" value="Yes" />
  <!-- AutoAlertForIssueResource
    - Controls if the user working on an issue is automatically an ISSUE WATCHER (get issue alerts)
    - Possible values = "YES" or "NO"
    - If this is set to YES, then alerts will be sent to issue workers whenever the issue is updated
  -->
  <add key="AutoAlertForIssueResource" value="Yes" />
  
  <!-- ShowUserRegistrationLink
    - controls whether the logon page displays a link that would allow anyone to register as a member.
    - possible values = "YES" or "NO"
  -->
  <add key="ShowUserRegistrationLink" value="No" />
  
  <!-- AllowAnonymousUsers- Controls if anonymous users can access Gemini (e.g. no logon required)
    - If this is set to YES, then anyone can view and use Gemini without logging-in
  -->
  <add key="AllowAnonymousUsers" value="No" />
  
  <!-- ViewAllProjects  - Are all projects visible to everyone?
    - Setting this option to "NO" will mean you can control visibility of projects at user level
  -->
  <add key="ViewAllProjects" value="YES" />
  
  <!-- AlwaysShowGeminiStats - Controls if the Gemini statistics panel is always shown on the main page
    - By default, the stats panel is only visible if you are an admin user or ViewAllProjects=YES
  -->
  <add key="AlwaysShowGeminiStats" value="NO" />
  
  <!-- ResetPasswordSubject - The email subject line used for sending password reset requests -->
  <add key="ResetPasswordSubject" value="Gemini Password Reset Request" />
  <!-- ResetPasswordMessage - The email message used for sending password reset requests -->
  <add key="ResetPasswordMessage" value="Please click on the link below to reset your Gemini password." />
  <!-- When creating a new user, you can send a reset password request:
   - AUTO      = Will always send reset password.
   - BLANK     = Will send a reset password only if password is blank.
   - NEVER     = Will not send a reset password.
  -->
  <add key="NewUserResetPassword" value="BLANK" />
  
  <!-- IssueDescriptionType - Possible values: Text, FreeTextBox or RichText -->
  <add key="IssueDescriptionType" value="RichText" />
  <!-- IssueCommentType - Possible values: Text, FreeTextBox or RichText-->
  <add key="IssueCommentType" value="RichText" />
  
  <!-- PluginPath - path to plugin directory under bin folder (required) -->
  <add key="PluginPath" value="bin/plugins" />
  <!-- DictionaryFolder - Location of the spell check files -->
  <add key="DictionaryFolder" value="dic" />
  <!-- Default Project Repository File Click Behaviour (None or View) -->
  <add key="ProjReposFileClick" value="None" />
  <!-- EnableHTMLPosts - Controls if HTML tags can be entered into text boxes -->
  <add key="EnableHTMLPosts" value="YES" />
  <!-- CharSetForExcel - The character set used when exporting issues to Excel -->
  <add key="CharSetForExcel" value="ISO-8859-1" />
  
  <!-- Make a never expired session (refresh in seconds) -->
  <add key="SessionRefresher" value="600" />
 
  <!-- Single Sign On [method of passing user credentials (SSO.aspx)]
    - DBHASHED= This is taking the actual password as it is on the DB (converted to base 64 string) and hash it with a key that is in the web.config (SSOKey).
    - DB      = This is taking the actual password as it is on the DB (converted to base 64 string).
    - HASHED  = This is taking the clear text password and hash it with a key that is in the web.config (SSOKey, see below).
    - PLAIN   = This is just sending the password as clear text.
   -->
  <add key="SSOPasswordType" value="DB" />
  <add key="SSOKey" value="" />
  
  <!-- Any issue id with this qualified found will automatically link to the issue -->
  <add key="IssueLinkQualifier" value="GEM:" />
 </appSettings>
 <system.web>
  <compilation defaultLanguage="c#" debug="false" />
  <!--  CUSTOM ERROR MESSAGES
          Set customError mode values to control the display of user-friendly
          error messages to users instead of error details (including a stack trace):

          "On" Always display custom (friendly) messages 
          "Off" Always display detailed ASP.NET error information.
          "RemoteOnly" Display custom (friendly) messages only to users not running
          on the local Web server. This setting is recommended for security purposes, so
          that you do not display application detail information to remote clients.
    -->
  <customErrors mode="Off" />
  <!--  AUTHENTICATION  (Gemini possible modes are "Windows", "Forms") -->
  <authentication mode="Windows">
   <forms
    name="Gemini203"
    loginUrl="Default.aspx"
    timeout="60"
    path="/">
   </forms>
  </authentication>
  <authorization>
   <deny users="?"></deny>
  </authorization>
  <!--  APPLICATION-LEVEL TRACE LOGGING
          Application-level tracing enables trace log output for every page within an application.
          Set trace enabled="true" to enable application trace logging.  If pageOutput="true", the
          trace information will be displayed at the bottom of each page.  Otherwise, you can view the
          application trace log by browsing the "trace.axd" page from your web application
          root.
    -->
  <trace enabled="false" requestLimit="10" pageOutput="false" traceMode="SortByTime" localOnly="true" />
  <!--  SESSION STATE SETTINGS
          By default ASP .NET uses cookies to identify which requests belong to a particular session.
          If cookies are not available, a session can be tracked by adding a session identifier to the URL.
          To disable cookies, set sessionState cookieless="true".
         
          InProc
          SQLServer (http://support.microsoft.com/default.aspx?kbid=317604)
          StateServer
    -->
  <sessionState
   mode="InProc"
   stateConnectionString="tcpip=127.0.0.1:42424"
   sqlConnectionString="data source=127.0.0.1;user id=sa;password=sa"
   cookieless="false"
   timeout="60" />
   
  <!--  GLOBALIZATION - This section sets the globalization settings of the application. -->
  <globalization culture="en-GB" uiCulture="en-GB" requestEncoding="utf-8" responseEncoding="utf-8" />
  <!-- File Upload Settings -->
  <httpRuntime executionTimeout="90" maxRequestLength="44096" useFullyQualifiedRedirectUrl="false" />
  <!-- The following blockers only come into affect if IIS is also configured
   http://support.microsoft.com/?kbid=815152
 -->
  <httpHandlers>
   <add type="System.Web.HttpForbiddenHandler" path=".xsl" verb="" />
   <add type="System.Web.HttpForbiddenHandler" path=".vm" verb="" />
   <add type="System.Web.HttpForbiddenHandler" path=".log" verb="" />
   <add type="System.Web.HttpForbiddenHandler" path=".config" verb="" />
   <add type="FreeTextBoxControls.AssemblyResourceHandler, FreeTextBox" path="FtbWebResource.axd"
    verb="GET" />
  </httpHandlers>
  <httpModules>
   <add name="GeminiHttpModule" type="Gemini.GeminiHttpModule, CounterSoft.Gemini" />
   <add name="Session" type="System.Web.SessionState.SessionStateModule"/>
  </httpModules>
  <!-- This allows HTML text to be entered into Gemini -->
  <pages validateRequest="true" enableSessionState="true" enableViewState="true" enableViewStateMac="true" />
  <browserCaps>
   <!-- GECKO Based Browsers (Netscape 6+, Mozilla/Firebird, ...) //-->
   <case match="^Mozilla/5.0 ([^)]) (Gecko/[-\d]+)? (?'type'[^/\d])([\d])/(?'version'(?'major'\d+)(?'minor'.\d+)(?'letters'\w)).">
   browser=Gecko
   type=${type}
   frames=true
   tables=true
   cookies=true
   javascript=true
   javaapplets=true
   ecmascriptversion=1.5
   w3cdomversion=1.0
   css1=true
   css2=true
   xml=true
   tagwriter=System.Web.UI.HtmlTextWriter
   <case match="rv:(?'version'(?'major'\d+)(?'minor'.\d+)(?'letters'\w))">
    version=${version}
    majorversion=${major}
    minorversion=${minor}
    <case match="^b" with="${letters}">
     beta=true
    </case></case></case>
   <!-- AppleWebKit Based Browsers (Safari...) //-->
   <case match="AppleWebKit/(?'version'(?'major'\d)(?'minor'\d+)(?'letters'\w))">
   browser=AppleWebKit
   version=${version}
   majorversion=${major}
   minorversion=0.${minor}
   frames=true
   tables=true
   cookies=true
   javascript=true
   javaapplets=true
   ecmascriptversion=1.5
   w3cdomversion=1.0
   css1=true
   css2=true
   xml=true
   tagwriter=System.Web.UI.HtmlTextWriter
   <case match="AppleWebKit/(?'version'(?'major'\d)(?'minor'\d+)(?'letters'\w))( (KHTML, like Gecko) )?(?'type'[^/\d])/.$">
    type=${type}
   </case></case>
   <!-- Konqueror //-->
   <case match="Konqueror/(?'version'(?'major'\d+)(?'minor'.\d+)(?'letters'));\w(?'platform'[^)])">
   browser=Konqueror
   version=${version}
   majorversion=${major}
   minorversion=${minor}
   platform=${platform}
   type=Konqueror
   frames=true
   tables=true
   cookies=true
   javascript=true
   javaapplets=true
   ecmascriptversion=1.5
   w3cdomversion=1.0
   css1=true
   css2=true
   xml=true
   tagwriter=System.Web.UI.HtmlTextWriter
  </case>
  </browserCaps>
  <webServices>
   <soapExtensionTypes>
    <add type="Microsoft.Web.Services2.WebServicesExtension, Microsoft.Web.Services2, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
     priority="1" group="0" />
   </soapExtensionTypes>
  </webServices>
 </system.web>
 <location path="Register.aspx">
  <system.web>
   <authorization>
    <allow users=""></allow>
   </authorization>
  </system.web>
 </location>
 <location path="ForgotPassword.aspx">
  <system.web>
   <authorization>
    <allow users=""></allow>
   </authorization>
  </system.web>
 </location>
 <location path="ResetPassword.aspx">
  <system.web>
   <authorization>
    <allow users=""></allow>
   </authorization>
  </system.web>
 </location>
 <location path="Error.aspx">
  <system.web>
   <authorization>
    <allow users=""></allow>
   </authorization>
  </system.web>
 </location>
 <location path="webservices/Gemini.asmx">
  <system.web>
   <authorization>
    <allow users=""></allow>
   </authorization>
  </system.web>
 </location>
 <location path="IssuesExcel.aspx">
  <system.web>
   <authorization>
    <allow users=""></allow>
   </authorization>
  </system.web>
 </location>
 <location path="xproject/IssuesExcel.aspx">
  <system.web>
   <authorization>
    <allow users=""></allow>
   </authorization>
  </system.web>
 </location>
 <location path="admin">
  <system.web>
   <authorization>
    <deny users="?"></deny>
   </authorization>
  </system.web>
 </location>
 <location path="sc/AddSCFile.aspx">
  <system.web>
   <authorization>
    <allow users=""></allow>
   </authorization>
  </system.web>
 </location>
 <location path="issue/StopWatch.aspx">
  <system.web>
   <authorization>
    <allow users=""></allow>
   </authorization>
  </system.web>
 </location>
 <location path="SSO.aspx">
  <system.web>
   <authorization>
    <allow users=""></allow>
   </authorization>
  </system.web>
 </location>
 <location path="webservices/CustomFieldsWS.asmx">
  <system.web>
   <authorization>
    <allow users=""></allow>
   </authorization>
  </system.web>
 </location>
 <location path="webservices/VersionsWS.asmx">
  <system.web>
   <authorization>
    <allow users=""></allow>
   </authorization>
  </system.web>
 </location>
 <location path="webservices/ComponentsWS.asmx">
  <system.web>
   <authorization>
    <allow users=""></allow>
   </authorization>
  </system.web>
 </location>
 <location path="webservices/AuthWS.asmx">
  <system.web>
   <authorization>
    <allow users=""></allow>
   </authorization>
  </system.web>
 </location>
 <location path="webservices/GeminiLookUpsWS.asmx">
  <system.web>
   <authorization>
    <allow users=""></allow>
   </authorization>
  </system.web>
 </location>
 <location path="webservices/IssuesWS.asmx">
  <system.web>
   <authorization>
    <allow users=""></allow>
   </authorization>
  </system.web>
 </location>
 <location path="webservices/ProjectsWS.asmx">
  <system.web>
   <authorization>
    <allow users=""></allow>
   </authorization>
  </system.web>
 </location>
 <location path="webservices/GeminiWSE.asmx">
  <system.web>
   <authorization>
    <allow users=""></allow>
   </authorization>
  </system.web>
 </location>
 <location path="webservices/TimeTracking.asmx">
  <system.web>
   <authorization>
    <allow users=""></allow>
   </authorization>
  </system.web>
 </location>
 <location path="Refresher.aspx">
  <system.web>
   <authorization>
    <allow users="*"></allow>
   </authorization>
  </system.web>
 </location>
 <microsoft.web.services2>
  <diagnostics />
  <security>
   <securityTokenManager type="CounterSoft.GeminiBiz.GeminiUsernameTokenManager, CounterSoft.GeminiBiz" xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd"
    qname="wsse:UsernameToken" />
  </security>
 </microsoft.web.services2>
</configuration>

I'm getting the same error.  Any resolution to this?  I added the lines to the config file with no success.

Thanks in advance for any help,

I was never able to get it running again.  I finally just had to remove sharepoint and reinstall gemini.  Sorry I couldn't be more help.

No, worries.  Thanks for the quick response.  I'll try reinstalling it.  Maybe someone from countersoft can lend a hand.

Take care,

Update:  I just reinstalled it using there .msi package instead of copying over the files.  Seems to have corrected the issue.

I just installed 2.0.5 on a system with Sharepoint already installed on it - and have it working.

The steps I took are:

Created Gemini database and user/pwd
Installed DB msi
Installed web msi
Added gemini to excluded paths in Sharepoint Central Admin

(Configure virtual server settings, select default web site, Define Managed Path, enter gemini as excluded path and click OK)

Updated web.config:

Reistration info and correct database connection info

Added <trust level="Full" originUrl="" /> to <system.web>
Added <add name="Session" type="System.Web.SessionState.SessionStateModule"/> to <httpModules>

Seems to be working now.

Hi,

I have had the same error but not due to installing sharepoint on the server.  Actually it happened twice in 2 days but has been ok for the last 3 days or so.

I had to remove Gemini from programs and re-run the msi again - remembering to back-up the web.config file as this gets overwritten in the install.  Maybe you've done this but it's not listed as one of the programs you have re-installed.

I don't know why this happened to us, so it's a little concerning.