Cant perform system restore

I lately played arround with different OSs so be safe i did a full partition/system backup. Now i want to role back the system, but when i try to restore i can´t get past the destination screen. Some yellow prompt always tells me to chose a valid destination, so i choose C:\ but i don´t get further, even with any other selected destination.

Im currently running win7 and my backup and the cb files are on a external hd.
Is it possible to perform what im trying to do yet with cb?

Hi

Please post a screenshot with the error you get.

Thanks