[man139]

i did that
i got the 'clean' version of it at a seperate hard disk, so its no problem, but I 'switched'(so i installed) v4.09 over the 'clean' one, but i still got the clean (v4.08m) at the seperate hd
but, i modified the air.ini and now it works(v4.09m) but i don't see the new planes..