Hi Alex,
Backup all customization files before you try following steps;
Copy all menu files to the support folder on the new system.
You need to copy the following menu files to the new system:
<menu name>.mnu
<menu name>.mns
<menu name>.mnr
<menu name>.mnc
<menu name>.mnl
Where <menu name> is the name of the custom menu.
Note: A quick way to find these files is to use search in Windows and search on *.mn*.
Use the MENU command and load the acad.mns file. The custom toolbars will now be loaded and useable on this system.
Thanks,
Sridhar
Software QA Engineer
Autodesk, Inc.