I've built a small database with Access 2007 at work. I've split it and installed it on our shared Drive. I install the front end on my computer running XP 2002 and I have no issues. I install it on another computer running windows 7 and log on and I still have no problems. I let one of the other employees log on and install it on their home page and they get a ".accdb is not a valid Win32 application" error. What gives? Pulling my hair out here. Any help would be greatly appreciated.