Hello PrattBoy, i too for a few days have been trying to get the SFS tool to work but with no luck. I am using 32-bit Vista and also am disappointed that the mod pack did not include anything to help mod weapons data, range, unit speeds, etc. The model builder is low on my wish list of tools. Has anyone been able to use the extractor to modify gun ranges, damage, etc? Please post if you have been able to do so.