Do you start the launcher in administrator mode?
Do you have some trouble with the My.com Game center? (it would be more easy to launch the game from the game center)
My brother is atm updating his my.com launcher. Do i need to download the my.com launcher from the site and then just copy/paste the game files for it to work(from him)?
Me and my brother got it working again. What he did was; You add allods from the old launcher to the my.com launcher as Gladia stated, chose the path where it is located, then my.com launcher will do a repair or something then old launcher should work again (I hope , working for us both)