That...is really weird. RealFuels is one of the first things I installed when i was modding my install out..I'll give a shot at re-installing it and seeing if that works with my 1.0.4 save.. Edit: Reinstalled RealFuels and the patch, still stops at the same place SubEdit: So, in all my meticulous modding, I completely derped and forgot to grab the RealFuels engine configs SubSubEdit: Reinstalling RealFuels with the engine configs it still pauses on the same file (Mk2Expansion/Parts/Utility/Rector/part/M2X_Generator_CP), Not sure why Guess I'll just dump realfuels out entirely, see if that works to let me run the patch. (Then comes figuring out why realfuels wont work right O.o) Subx3Edit: Well, Failed to launch with patch but without realfuels, and It launched fine with realfuels but no patch, and t launches fine without realfuels and no patch. whenever this patch gets involved it stops at that file. D: I got nothin. Guess I'll take your advice and do a test install, put this near the start of the install list and do a test launch after each addition till I find which mod is actually causing the problem. Bleh.