Make sure the #include file is in the search path when you compile. If VFP can't find it, it's ignored without causing an error. Also, in 6.0 you can set a default include file to be used in all projects under Tools/Options/File Locations

>VFP 6.0
>I have numerous .vcx files that are using a #include file. All was well for years. Now - all of a sudden every project I have that is dependant on those .h files fail. They are not recognizing the #DEFINE in the .h file? All my forms are based on one of two sub-classed forms and numerous .vcx files -- all using one of two .h files. ALL projects failing.
>The files are still there, I opened them and they look fine
>
>Whats going on?
>
>HELP!