Of course it will work fine with or without them , it seems realy strange why you (quite often) think that I will suggest something not working , lol. OK , good , I understand you trust nobody , right and quite fine by me ! This result is weird , though . Perhaps it has something to do with XP ? This may explain why the other XP users , like the previous one , have crashes with youtbue and I do NOT . What to do ? Try to replace manifest_version : 2 with something non-existent , like manifest_version : Y or manifest_version : 9 , try to just type in some rubbish into the key :"wvcwevr67ki67n=bk878ckwb" . The general idea would be NOT to remove them completely , but to let the browser think they are still there but NOT valid (version mismatch , etc) and get back to me with the results . I'm sorry if I shall not reply fast . Like I said , I'm having rough sunny days , lol.