I don't know what to tell ya, I used it a while back and didn't have any issues. Did you apply a patch or something? Or maybe you need to. It could be that the fixer is altering a specific version if that .dll.
What are your OS and system specs?? Does the gae run when not using the fixer? You DID back up the altered file, right? Search the rest of the forum or maybe the EA boards - surely, you're not the only one to have this happen.
Hm you could also try lower 16:9 resolutions such as 1280x720, and force heavy AA to make up for it...
I tried it unpatched as well as patched. I'm using Win7: Core2Duo, 5870, 2GB Ram, Creative X-Fi Platinum and I tried using different resolutions as well to no avail.
I wonder if I could manually edit the .dll myself to change the resolution like I've read about. Unfortunately I do not know the values I would need to look for specific to this.