RazeBerry

@Starwaster Quite an harsh answer. May I ask how to use the module manager to rescale the parts?

@Starwaster It works when it is not scaled, it has negative mass when scaled. Trying to recomplie TweakScale , would that work? What should I do?

Hello, I am running into problems regarding the OPT parts. Everytime I place down an fueled part, the vehicle mass become a little lighter, therefore it must have negative mass, I suspect it is incompatible between OPT mod and the real fuel mod. Bug Parts not containing fuel works perfectly. Also, OPT fuel tanks have very low readings for fuel and oxidizer units, please help.

@Dman979 Here is an new image, the CoM was way below the launch vehicle and it was very strange. http://imgur.com/a/W3Pbl

I am very new to RO and RSS and when I am crafting my new rocket, it has negative mass and center of mass was well below the rocket. Picture 1 Picture 2 When launching, the rocket crash and clips with other parts.