I have a 2003 .mdb system that is running on an Access 2010 environment for 20 users. When it opens the old Access 2003 custom toolbar that I created appears fine, where it was supposed to be, and not in the Add-ins tab. Result, as this is a hugely complex toolbar created over 10 years.
One of the users has dragged it to the half maximised state, and then clicked the red x on the resultant pop up to close the toolbar.
I cannot now get it back on their machine to be viewed just as it was.