I bought this game on gog.com after already owning it on Steam, hoping the farcry2.exe would be up to date. Sure enough it wasn't, so I tried to download the patch from Ubisoft's website. The patching fails the same way as with the Steam version, saying "Could not retrieve version number. Installation will be aborted."

I've tried my best to screw around with different methods of installing the patch, uninstalling and reinstalling the game, but have met with no luck.

I just want to patch the game to either version 1.0.2 or 1.0.3 from 1.0.1 so that I can play using an Eyefinity setup because those resolutions weren't supported by the game until later versions.

Has anyone encountered this issue and/or found a way to get the patch to install?

Have you tried using your Eyefinity setup with the native GOG installation of the game? GOG release games with the latest available official patches already applied, though I don't own this game on GOG so cannot confirm that this is the case for this game, but it is the Fortune's Edition.

Yes, despite the file version of farycry2.exe being listed as 1.0.1, I booted the game and confirmed that I was unable to select Eyefinity resolutions. Also, as in the Steam version that I own, the benchmark tool is the newest version and will boot the benchmarks with Eyefinity resolutions.

I had hoped that GOG would have kept this up to date like their site says, or at the very least the DRM free portion of the purchase would allow me to run the patch but this isn't the case.

If this matches the Steam installation then I'd say that GOG have been given the latest digital distribution version by Ubisoft, so it is likely an issue with what Ubisoft have provided to both Steam and GOG. In any case, raise a support ticket to GOG with all the details and maybe search the Ubisoft and Steam forums to see if anyone has any workarounds.

This said, it is worth mentioning that Ubisoft removed the SecuROM DRM from FarCry 2 anyway. One of the patches removed it so the retail disc was no longer required (and I guess the whole activations). I got my disc free with my graphics card which is the only reason I installed it at the time as I like to avoid SecuROM and other forms of invasive DRM.

My game shows version 1.03. Are you sure eyefinity isn't working for some other reason?

I hadn't noticed this before and mine indeed does say v1.03 in-game. I was basing my previous assertions on the properties window of the .exe's themselves. The attached image should show what I'm talking about. The fact remains that the resolutions don't show up as an option.

The Eyefinity works in other applications etc, so I don't think that's the issue.

I ended up getting it to work just now by altering the GamerProfile.xml file in Documents/My Games/Far Cry 2 directory. I can't believe I hadn't found this simple fix before this... I must have assumed that since Eyefinity was supposed to be natively supported by newer versions that I had a version problem and immediately stopped searching for my actual problem.

Sorry for the trouble, and thanks for the help

EDIT: Deleting the GamerProfile.xml file completely and starting the game snapped it out of whatever funk it was in and allowed the resolutions to show up in game.