wrong site completely.. try ubuntu forums or the application forums. it's really quite simple tho.. that file doesn't exist for some reason.. it probably went somewhere else or there is a case error or it never got made (possible write permission error to directory.. were there any "access denied" or "file does not exist" type errors when installing?).. something like that.. look at your filesystem and see where that file is (if it exists).. then edit the config file to point at the right location, or move the file to there.. either is the same.