I hope somebody can help me with this one...

I have a ZEN6.5 Groupwise object designed to install Groupwise6.55.
When I run this application, I get the following...
path\grpwise.exe is not a valid win32 application

I have a VMWare WinXPsp2 installation where this same application, using
the same user credentials installs with no problems whatsoever.

Can someone help?