Thats why... You have a difrent language, the uninstall.dat is set to uninstall the english folders. You can fix this by - Downloading the original installer and installing it normally. - Now umcompress the nlaom addon and replace these 2 files with the ones created on your machine during normal install with the exe unins000.dat and unins000.exe - Now recompress NLAOM.CAB and repack the addon