http://paste.pound-python.org/show/UfQHvHbwx9XeoZYJGs82/

What version of AE2 are you using?
Edit: Mmk your crashlog link is showing now, ty

Sorry for that.. I was comment it too quickly..
I'm using AE2 rv1-stable-1

Odd, that shouldn't happen. There is a mod in there that is adding a crafting recipe without an output item. I will add a safety check for this.
Thanks again for letting me know.

Don't mention it, thanks for your help

Thanks again!

As soon as Curse approves the new version, it will be available for download. 0.8.1b