I'm on latest KK (1.4.3.3 I think?) and 1.4.4 KSP. Could it be the 1.4.4 update causing errors? I also have a few other mods installed (KAS, KIS, BDA, AirplanesPlus) installed so they might create some issues too. I'll try with just KK and KerbinSide and see if that works. Thanks!