Digi Connect SP device NET+OS 7.5.2 (Win 7 32-bit). I recently updated from 7.2 (under XP) to 7.5.2 (Win 7) and I have converted several projects successfully. But one project has me stumped for three days; the project uses FTP and whatever I do I get multiple errors referring to the FTP functions eg 'undefined reference to FCConnect' etc etc. I can reproduce the error simply thus: (1) Build the sample FTP client application just to prove it works (2) create new NET+OS project (disable all service options except ADDP Server) (3) build and test OK (4) import the two files naftpclnt.c and .h from the FTP sample (5) Rebuild and see errors. Tried everything I can think of. Thanks, thanks, thanks for help.