You might try calling ReleaseComObject explicitly when you are done with a COM object.  I would think that the .Net runtime wouldn't leave objects around for a few days, but it might help.

For tracking down problems like this, it's often helpful to strip your program down to the smallest example that still produces the problem.  If you can do that, you should have something small enough to post here.

Hi guys, thanks for your replies.

I'm doing a lot of testing and have stripped it down.  I have a basic question.

The Laserfiche SDK documentation has only this in the example for the LFConnection.Terminate Method -

      Dim Conn As LFConnection = DB.CurrentConnection
      Conn.Terminate()

In a "real" system, what should also be done with the Conn and DB after that?
Conn = Nothing / probably
DB = Nothing    / probably
Conn.Dispose   / 'dispose' is not a member of 'LFConnection'.
DB.Dispose       / 'dispose' is not a member of 'LFDatabase'.

Similarly, what should be done after Conn.Create(DB) to App, Serv and Conn?

Thanks!