The SAPManPack CoreMod keeps crashing minecraft. It says this:
Exception in thread "main" [17:23:00] [main/INFO] [STDERR]: [java.lang.Throwable:printStackTrace:461]: java.lang.UnsupportedClassVersionError: de/sanandrew/core/manpack/init/ManPackLoadingPlugin : Unsupported major.minor version 51.0
THIS IS NOT A JAVA PROBLEM, I HAVE THE LATEST VERSION OF JAVA
I have mac

Don't tell me it isn't, it clearly states it is. Unsupported major.minor version 51.0
#67, read that. All of it. Then come back if you still have issues.