Tim
1) Confirm the IS package works on, for example, Windows XP or Vista. Use a virtual machine like Oracle VirtualBox to test a clean machine.
2) What type of user are you running as when you run your VFP application?
3) What is your DEP setting
4) Are you using any other VFP libraries / tools like Molebox or Refox?
5) What version of Windows are you using
6) What version of VFP
In the End, we will remember not the words of our enemies, but the silence of our friends - Martin Luther King, Jr.