Based on user reviews and technical guides, the following methods are the most successful for resolving this:
If you are using a desktop shortcut to launch the game, the path might be pointing to a subfolder (like bin ) instead of the main directory. Call Of Duty 4 Modern Warfare Filesyscheck.cfg Free
The Internet Archive has preserved thousands of COD4 server backups from 2008-2012. Based on user reviews and technical guides, the
Even with a free filesyscheck.cfg , issues arise. Here is how to fix them. Call Of Duty 4 Modern Warfare Filesyscheck.cfg Free
Fail to fix the error if the root cause is a rather than a missing file.