In VFP 6, I have verified that my _Include sys variable is set to Home() + "Foxpro.h" [? _include in the command window verifies this]. The VFP Home() is in the search path. LocFile("FoxPro.h") returns the correct location of FoxPro.h. It is also defined as my default include file in the Options. So why do I get a Foxpro.h file not found error everytime I compile a project, etc.? I am always having to copy this file to whatever directories I need it in.