The application you are attempting to use has a reference that it cannot resolve to an object, type library, DLL, or external ...

The application you are attempting to use has a reference that it cannot resolve to an object, type library, DLL, or external database.  Either the object, type library, DLL, or database was deleted or renamed.  Examine the Available references list in the References dialog box in the Visual Basic Editor ( Tools menu) to determine if any action is required.  If you did not create this application, contact the programmer or administrator of the system.