Darn. Well, the silver lining is I will not have to shoot my self...
Is this app compiled as 32 bit, 64 bit, or "Any CPU"?
If 32 bit, it may be worthwhile throwing Modules at it and see if there are any runtime differences - framework, system or CR. Modules is here:
https://smpdl.sap-ag.de/~sapidp/012002523100006252802008E/modules.zip
- Ludek