This is a quite common error that is caused by something that has become corrupted with your installation. Fortunately, the BF2S community has noted several fixes that are summarized from this post with my clarifications:
Problem - Modified Content Error
Cause - Your Battlefield 2 Files differ in some way than the servers
Fix - Few things to try and get this Fixed.
1. A frequent problem is that one of your personal configuration files has become corrupted. As a result, move your Battlefield 2 folder from My Documents to your Desktop before uninstalling and reinstalling.
2. Make sure you have the latest BF2 1.3 patch (use the full 1.3 patch and not the incremental, which has caused problems for MANY people). Then install BF2 > then SF > then FULL 1.3 Patch.
3. Still doesn't work? Try and update PunkBuster, to do so use the program, pbsetup, found at this website
http://www.evenbalance.com/index.php?page=pbsetup.php4. Still problems? Try re-downloading the 1.3 FULL patch (DO NOT USE THE INCREMENTAL 1.3, WHICH HAS CAUSED PROBLEMS) from a different website and install it again (steps 1 &2), maybe several times trying each time to see if it has worked.
5. Still not working? Do a manual uninstall of battlefield 2, instructions on how to do this can be found here
http://support.ea.com/cgi-bin/ea.cfg/ph … faqid=8986
Then reinstall Battlefield 2 and apply the latest Full Patch (steps 1 & 2).
6. You could have faulty RAM, try running a program called Memtest86 to test your ram for errors. Also try removing a stick of RAM from the machine to see if it helps running on just 1 stick of RAM.
Last edited by OrangeHound (2006-08-21 21:59:34)