Thank you jakj for taking the time to help
While I don't know much about minecraft modding or java in general, I'm pretty adept at trying logical tactics to resolve my problem (after having a "clean" backup of my world made). Since disabling the RIM/WRE-CB mods didn't do it, I figured it was mutlipart causing it. I opened up the map inside of MCEdit and didn't see anything out of the ordinary in the two places the frame carriage was.
My server won't load (due to mod dependancies) without multipart, so I just went after WRE-CB and multipart.
To resolve the issue I deleted three files from underneath my world folder:
forcedchunks.dat
multipart.dat
RedstoneEther\*
I tried to delete just one or the other, but it did not have the desired affect. Deleting all three however made the errors go away and everyone is happy as a clam.
Love your work, having a lot of fun.