Hi Stefan,
Yes if you can get to the DAT folder of the Dynamic AI installation you can copy the files with the .dai extension - e.g.: the LCLDNMC.dai file will be the repository that you originally had in your personal installation or eventually the DEMO.dai file if you added your stuff to the DEMO repository.
Then install a new Dynamic AI - you can download the latest version from
www.dynamicai.com - and overwrite the lcldnmc.dai file in the DAT folder of your new installation. If you overwrite (optionally you can rename the files as long as they have the .dai extension they will be recognized as valid repositories) you might have to change back and forth in-between 2 repositories to reload the overwritten version.
Upgrade of the repository to the latest version should happen automatically.
Hope it will work for you!
Best regards,
Carsten