That is what I read as well. The file was a sort of tattletale file, which is used to compare to or check for the item believed to be nefarious. Sort of what is known in consumer security as a signature file. This is a basic stupid mistake, to have one data file able to bring down the entire system. We are not talking about a piece of data such as a tax record, which has to be there, but clearly a separate data file which is not needed to use the product (as proved by the "fix"). Simple code would have prevented this. 100%, the company will say missing the file means there was tampering, but a warning message while annoying, would have sifficed.