Ms Access Compiles without VBA code

Is the code working, and not visible?
No code is visible within a MDE file.

Its not working, I think it may be do with the Signature.

Try decompiling your MDB file and recompiling as described here ...
http://stackoverflow.com/questions/3266542/how-does-one-decompile-and-recompile-a-database-application

Or here
http://social.msdn.microsoft.com/Forums/office/en-US/72b842b0-86a0-4476-afc3-ae9d5ea740ff/decompile-steps-for-mdb?forum=accessdev

Well described here ....
http://forums.databasejournal.com/showthread.php?34222-Decompiling-VBA-code-in-an-Access-mdb-file

Routine decompiling is almost as important as routine compacting.

(If you are trying to run the MDE file on another PC there could be library issues).

More then likely, it's "macro" security that is stopping the DB from executing.  It must be in a trusted location, or the macro security level must be set to low.

If it made a MDE successfully, then I doubt there is a problem with the code.

Jim.

Im testing with a form that just displays a simple msgbox when the db is loaded, works before the code is published but not in the MDE file.  The code is not digitally signed, but in [Access Options],[Trust center],[Trusted Publishers]  their is a list of valid publishers. Would this have an impact?

This app is a for a global business so they have more than likely got some global setting that is not validating the MDE