Thanks. The absolute path does work which is good. The GetMiletusPath function does not appear to work on a Mac though. I tried all the integer inputs in turn (NP_APPDATA, NP_APPPATH, NP_DESKTOP, NP_DOCUMENTS, NP_DOWNLOADS, NP_EXE, NP_HOME, NP_MUSIC, NP_USERDATA, NP_PICTURES, NP_TEMP NP_VIDEO). With an absolute path though it should be a reasonable workaround to my problem.