Thank you for the additional details.
There is probably something about the computer environment that causes this problem:
- Is the user running Windows as a limited user, ie. does the problem occur for an administrator on the same computer?
- Does the problem occur on any other computer?
- Are there any special security restrictions associated with the .NET Framework?
We may need to send you a special ‘debug’ build of the solution to help identify the cause of the problem.