I recently got the game and when ever i go to Save a replay or press buttons to try it out i get a blank screen and an empty button at the bottom right corner.....and to get back ot the game i have to press it and hit Esc. Am i doing something wrong or something? cause it wont save help would be appreciated~

Hmm which version are you using?
Try reinstalling your client, though this bug is known, the reason is unknown and we couldnt find a fix for it yet, try reinstalling your client, also your stderr.txt could be useful.