It most certainly is compatible, you installed something wrong.
EDIT: I reread your comment again and you "claim" it's not compatible with RO, which it is since I wrote the configs for it and other people have contributed to it regularly, but then you go on to say you are ONLY using RSS. RSS only rescales the solar system. RO makes all the changes to the parts to SUPPORT the use of RSS. Of course the stock configured parts won't work in RSS, what did you expect? Follow the proper installation instructions for RO/RSS on the github wiki before commenting incorrect information again please.
raidernick's post in Launchers pack incompatible with RSS was marked as the answer