I'm trying to install TTW, and the installer (creator?) gets about 3/4ths of the way through when it throws this error. I searched the forum and the bug tracker, but the only info I could find on this problem was someone getting the same error with v2.8 and being told it was fixed in the next release. It appears to be looking for one of its own files that's not there; I tried a different mirror in case the first download was missing it somehow, but no dice. Triple-checked the instructions and I can't find anything I did wrong.
Fallout 3 (GOTY) and New Vegas (Ultimate) are both fresh installs via Steam, and have been launched at least once (though I haven't started a new game in either). Neither have been modded beyond disabling GFWL and mouse acceleration. I'm running Windows 7 Pro, SP 1, 64 bit. I can provide the rest of my specs if they matter (though it doesn't seem like it would this early in the process).