3 months ago I unistalled l4d2 recently I wanted to play l4d2 however when its download rate 99% it pauses then a message pops up says something about a disc read error. the download rate then goes back to 50%. when i unpause it starts to download for about 10 seconds then it pauses again. This problem is really annoying and I need help! also I have already have deleted the appcache folder.