Sometimes we have found that 'source out of date' means that you may have an exe or app in your programs folder. When FPW26 encounters an error it normally stops and opens the associated prg file for you to see the error. If an app or exe exists it runs the exe or app in favour of your program files or fxp's. Try deleting any app or exe files out the directory and trying again. All assuming you are working with prgs.