I'm creating a .mdb using AC2002. The file format is AC2002. A user is running AC2003. When the AC2003 user opens the .mdb they get an error #48 that says error in loading DLL. Is there a way to figure out which DLL it's having a problem with? could it be that I have a DLL library reference that the AC2003 user does not? Everything works fine except for when the AC2003 user goes to right click on a form to call a submenu. Then they get all kinds of subroutine references that are not found. Any ideas? thanks in advance for your help!