Command being prohabited with unknown cause

I have constructed a mdb file (2002-2003) using a machine with MS office
2007, and placed the mdb file on my company intranet's network drive,
when I use a MS office 2003-sp3 to open the mdb, error message about some
macro was notified.

e.g:
The command or action 'Quit' isn't available now.
*You may be in a read-only database or an unconverted database from an
earlier version of Microsoft Office Access.
*The type of object the action applies to isn't currently selected or isn't
in the active view.
Use only those commands and macro actions that are currently available for
this database.

I really don't understand the error message and have no idea to fix it.
Could any body help??

Thanks so much