Cant upload any image or media. it seems this theme issue, tried everything else

Hi I am using Dzonia lite from last few months and i have recently updated to WP 3.5 and since then i cann’t upload and see any images or any other media. I am so worried i dont want to change the theme as i have done a lot of work on it. I have tried everything else but it seems theme issue…please help if you have any fix for it…thanks

regards
Pardeep