@Kuzutetsu: Please know that DLC is NO Backup. Next time, please backup/copy the COMPLETE cfg folder as it contains all settings/links/accounts. Sorry that I didn't answer earlier and you had to re-install it.
When the same error happens again, just delete Core.jar file and the folders tmp and update
and rename JDownloader.jar.backup to JDownloader.jar and start JDownloader again
__________________
JD-Dev & Server-Admin
|