Kongregate .sol files

After recently updating the free version that of Security Suite that Comcast users receive for free, my son went back to the game website Kongregate to start playing his games again. However, the computer has now decided it would be a good idea to start deleting all .sol files that are saved under the specific Kongregate folder. I have already set the folders to be excluded from the Scans and the Auto-protect and Sonar Detection, yet they still keep being deleted. I was wondering if there may be anywhere else that I will have to exclude the files from. I am currently running the most updated version of Firefox, and have did not have this problem before receiving the last major update for Norton Security Suite(which was a month ago or so I believe...)