Assuming you have two copies of Multi-Edit, and they are close versions, you can use Tools-Customize-Import/Export to move most of the customizations. If not you can move your templates by coping the template file. Use the following post to locate your config directory. viewtopic.php?t=2013. in that location will be a file with the template extension name, with the .tpt extension. You may then be able to hand edit the meconfig.db file to move the language and extension entries. Menu entries will be harder as the command numbers may be different. Either way do not edit these files with Multi-Edit running.