Mod wont launch

[throwaway9 0]

When I try to open a mod it tries to start but then just goes right back to the launcher. I would use pastebin but the log is too large.

Here is the log http://binbox.io/GnCYW#kZAwUr1Q

[JaariAtmc 81]

This modpack is so old that it likely doesn't support java 8. You may have to drop back to java 7.