I have all of my library files in a single directory, and I want to include then using a #include statement, but when I compile, I get errors saying "can't open include file <...>". The directory where my Include files are located is "C:AutoIT-srcmyLib". I added these 2 lines at the end of the au3.properties file: openpath.$(au3)=$(SciteDefaultHome)..include;C:AutoIT-srcmyLib openpath.beta.$(au3)=$(SciteDefaultHome)..betainclude;C:AutoIT-srcmyLib I made other changes (such as "UDFCreator=Andy") to the file and when I run the AutoIT editor, I see the results of those changes, so I know the file is being parsed, BTW: I can put the cursor on the #include line and press ALT-I and my Include file is opened OK. Is there something else I have to do? Andy