cant import mpeg-2 files in premiere cs6

hi there,i just installed adobe master collection cs6 and i cant import mpeg-2 files. premiere has this error : there was an error decompressing audio or video.i already installed any codecs i could but it doesnt work windows is 7 64-bit. please help me. its kind of emergency.thank you.

via Video Editing Forums: Digital Director – Adobe Premiere, Premiere Elements, and After Effects