Windows .jar Crashes?

[shinzoop1]

hey sorry to bother but it wont let me load the mindcrack pack it loads up to the mojang screen then crashes

here is the crash report from the file it downloads

http://pastebin.com/Sd7v617a

 

[ShneekeyTheLost]

Hmmm... for some reason, Redpower is not installing properly. Redpower Core works, but then all of the other modules error for some reason.

Try re-downloading the mod pack, it may have improperly downloaded.