Rick,

Thanks for the continued help. I believe you are on the right track here, threading is my issue, and I have re-created your the example on your web page. I created a vb.net dll with 1 form and is run by your example 'runform' procedure, starting a new thread.
I then created a simple form in VFP9 with 1 button that creates this .net object and executes the runform method. Works as described. No problems.

Now I created a VFP9 exe out of this. The main prg looks like this:

do form test
read events

In form test, there is 1 button that creates the .net object and brings up the form. When I build and execute this in the VFP IDE, it runs fine. When I run the exe from Windows explorer, it errors with :

ole error code 0x8007000b An attempt was made to load a program with an invalid format.

WTF? Am I missing some code that needs to run in this VFP exe when it runs outside of the IDE?