http://pastebin.com/R4s0fGBr
if a chunkloader is placed in a dim with no players in it. the server console spams with errors. Railcraft and chickenbones are the only loaders that spams this error.

Forge 953 build
railcraft 8.2.0.0

This is beyond the scope of Railcraft, please report it to Forge.

[05:50] Lex, I left you a bug report
[05:50] @LexManos i saw
[05:50] @LexManos it may be a issue with the chunk loader not us
[05:51] uh. I reported it to covert. but he said to report it to you
[05:54] @LexManos Also, not gunna fix it if its a 1.6.4 issue, as i know for a fact chunk loaders work fine in 1.6.4

and its back to you.