Its not spawning any of sky castle, or any of them most of them from 1.6.5 I put them in the generic folder (I got them from the obsolete folder) and I have no clue to fixing it.
First question: what version of MC are you playing and what version of the mod are you using?
Ruins for MC 1.7.10 is a .zip file. You need to unzip the file into the mods folder.
"We live on a placid island of ignorance in the midst of black seas of infinity, and it was not meant that we should voyage far."
Yes, I unzip the folder and put the jar and resources folder in the mods folder.