I just purchased a Sitebuilder license for my Plesk 7.5.2 SuSe 9.1 system but I can't upload the key file. Plesk always indicates an "invalid license key or license" and the upload is not succesful. I also tried a manual upload directly to the .key folder but it doesn't seem to work either. Could somebody help me? Thanks. I'm a complete newbie regarding Plesk and I'm not very good with Linux either, so please have mercy.