you typed all that? You can't copy and paste it? What a pain ... Sadly, though, you're missing the very top part which actually tells what the exception was

I would check your options and make sure the URL to Hijack is configured properly. You can remove .jempegrc in your home directory to have all the options regenerated.

The correct values are:
Hijack URL: http://empeg-hijack.sourceforge.net
Hijack Mk Version: mk2