Sorry to hear your having troubles with cabin fever, A lot of people are having these problems. I tried browsing around and asking friends and there have been no fixes. I had trouble patching so i copied the files from my friend. LOL. If you've reinstalled i don't think its a corrupted file, if i find anything new I'll PM you.
There probably isn't a reason why this should work but maybe ask a friend you know that has CA to give you the files, preferably go to their house and copy the Nexon folder. (Someone you know irl and lives close)