A puzzel piece

[Martin Francom]

Paul,
   Here's a puzzel piece.  Hopefully it helps somehow.

I was working with a new project the one that uses the firesplitter control. After adding some additional (existing) forms and making some minor changes.  Then went to compile and the FireFly crashed, giving no error message. Just the Windows "Unexpected Error Windows is closing the program" messagebox.
I tryed commenting out all the stuff added.  No good, FF still crashed with out and error message other than the windows message.  Finally removed nearly all the forms and then compiled the program successfully.  Added back the forms and uncommented the block comments and compiled after each form.  Now compiles ok.  I can not figure out what part of the code was the problem. 
   Strange.  Have you heard of this problem before?   Any idea what going on?