Hi.
When installing a new ROM on ANY Pocket PC, you should NEVER restore a backup taken before you upgraded your ROM over the new ROM.
Many of the back up programs can backup part of the devices system files with all of your programs. Restoring these system files over the top of your new ROM will cause device instability.
You should ALWAYS reinstall all of your applications from scratch after a ROM upgrade.
I hope this helps! Hope everyone (who is...) has a great Father's Day!
Kind Regards,
Christopher Spera