Hi Idalep,
In the TestStand Reference Manual, there are some great notes/tips for binary compatibility. Some of this you may already know, but please read it carefully and see if there is some new information that may solve this issue. The information starts in Chapter 5, page 8 (page 5-8). You can find the reference manual by navigating to the TestStand section in the Windows Start Menu.
Cheers,
David Goldberg
National Instruments
Software R&D