I just got the same problem tonight. I was just about to play it, and the game lobby didn't load. I tried starting it again, then it tells me "The System Cannot Find The File Specified cncnet.exe". Eventually I went to the game files, and noticed the file got deleted by itself somehow. I even went so far to uninstall the whole file, and reinstall it, but it happened again. I used Task Manager to see what made it keep deleting. The program "rundll.exe" popped up as it was deleting. I have no idea what I should do because that program is important to run Dynamic Link Library files.