MrLibeRation

@JadeOfMaar Thanks, I got my problem fixed. Its nice to play this awesome mod without any problems.

@Stone Blue I have OPT reconfig and B9 PartSwitch installed. I don't know if those are the files causing the problem I've searched everywhere but seems I'm the only one having this problem.

For some reason all my OPT engines suddenly are in need of propellium as a resource but I don't have even have propellium in my stock tanks. I have Cryo Tanks installed and all my OPT files are up to date. Some help would be very much appreciated.