Which version of Gemini?
Can you please check Gemini's system log for errors?

Gemini 3.5.4 (Build 2435)

And nothing logged today.

Do you get the exception as soon as the call happens or is there a delay?

As soon as the call occurs

Do you get an error when you try the GetUser or WhoAmI call?

The Stack Trace I have in the OP was from a GetUsers() call. However as i mentioned it is also happening for the IssuesServce.CreateTimeLog() call.

Yes, I was asking about GetUser (singular)....

We have not seen this before and trying to establish a pattern.

Both of those Calls went off without a hitch.

Here is the exception information for the CreateTimeLog()

Data: {System.Collections.ListDictionaryInternal} Error: {CounterSoft.Gemini.Commons.Rest.RestError} Message: "Exception has been thrown by the target of an invocation." Source: "CounterSoft.Gemini.WebServices" StackTrace: at CounterSoft.Gemini.WebServices.BaseService.ThrowResponseException(WebResponse response) at CounterSoft.Gemini.WebServices.BaseService.ProcessResponse[T](String url, Object obj, RequestType requestType) at CounterSoft.Gemini.WebServices.BaseService.GetResponse[T](String url, Object o, RequestType r) at CounterSoft.Gemini.WebServices.IssuesService.CreateTimeLog(Int32 issueId, IssueTimeEntryEN time) at (My Application)

Can you post a code sample of this?

Also, please inspect the exception (RestError)  and check the inner exception and error within it.

It might give a clue to what is going wrong.

InnerException is Nothing

Public Shared Function AddTimeEntry(ByVal TimeEntry As IssueTimeEntryEN) As Boolean

    Dim result As Boolean = False
    Dim newTimeEntry As IssueTimeEntryEN

    '~~~~~~~~~~~~~~~~~~~~~~~~~
    '~~~ Setup connection ~~~~
    '~~~~~~~~~~~~~~~~~~~~~~~~~
    Dim serviceMan As CounterSoft.Gemini.WebServices.ServiceManager
    serviceMan = New CounterSoft.Gemini.WebServices.ServiceManager(GEMINI_WS_URL, GEMINI_USERNAME, GEMINI_WEBSERVICE_AUTH_STRING, "", False)

    TimeEntry.TimeEntryDate = DateTime.Now

    '~~~~~~~~~~~~~~~~~~~~~~~~~
    '~~~~ Send Time Entry ~~~~
    '~~~~~~~~~~~~~~~~~~~~~~~~~
    newTimeEntry = serviceMan.IssuesService.CreateTimeLog(TimeEntry.IssueID, TimeEntry)

    If newTimeEntry.IssueID = TimeEntry.IssueID Then result = True
    '~~~~~~~~~~~~~~~~~~~~
    '~~ Return Result ~~
    '~~~~~~~~~~~~~~~~~~~~
    Return result

End Function

When building the object to pass into the function I am filling the following fields:

DateCreated IssueID Hours Minutes User UserID

Please make sure that you set the ProjectID of the time entry and make sure it is the project for the issue. Also, make sure that the user that the service manager is using is allowed to log time.

Thank you my friend, it appears you have resolved my issue.

Once the ProjectID field was set it went through fine.