Unexcepted crash when building connection between rolling machine and centrifuge

I´m playing with the extention "Feed the Beast" and I had an unexpected crash. A file was generated and it says that I need to report this error to Majong - so to you.
I've already tried to restart but I always get the same crash screen.
I occured when I was trying to build a connection between a rolling machine and a centrifuge (which is obviously not allowed or something).

Hope my description help and you can solve it. Thanks a lot!

Kind regards,
Christian Ruppert