Rocket doesn't lift off launchpad

[Leefje]

Hello everyone! I have been playing KSP quite some time now and I've just been getting into RSS. I really like the mod but the rockets I make don't lift off the launchpad anymore. They worked fine, but not anymore. I think that it has something to do with the second stage. If I build a rocket without a second stage it works perfectly fine but the second I add a second stage it doesn't lift off and is stuck "hovering " in the air. I can fire up my engines and even do flips but it just won't move further up into the air. It's like this for every rocket that I build. Has anyone had this problem? Can someone help me?

P.S.: I wanted to attach a picture but I don't know how.

[Nightside]

Welcome to the forums and to the challenges of modded KSP. 

It’s hard to tell without a picture (there is a thread in the Community section with current instructions for posting pics), but it sounds like a mod incompatibility issue. If you know about when the problem started you could remove mods installed after that point and see if the problem is resolved.

[Jas0n]

Pictures can be posted through hosting services such as Imgur.

 

 

[Leefje]

Thanks! I'll make sure to use that in the furture. It seems that I have solved the problem... I installed KSP again with the same mods but now it works. Don't know what caused the problem but it seems to be gone now. I just installed RO and that seems to work better than just installing all of the mods separately.