I had CivIV 1.61 working. I wanted to try playing a GOTM. I tried to install HOF1.74 but it wouldn't install. I started thinking maybe the problem was that I had installed the Blue Marble graphics and maybe I couldn't play GOTM with that. I uninstalled CivIV from the Control Panel because I couldn't find anywhere else to uninstall and did bring up a CivIV unistall shield. I installed the game again. Tried to install 1.74Patch which wouldn't install until after I installed 1.61 Patch. Then I installed HOF1.74. The game wouldn't start b/c there was a dll missing. Found the dll online. Got past that. Now the game won't play because there's a problem loading shader libraries. I don't even know what a shader library is. I'm wishing now that I had never messed with trying to alter the game which worked fine before. I just want the game to work. Being able to play GOTM would be really nice, but I just want the game to work. Please somebody tell me how do I fix it?