crashy

Have any of you noticed that any parts with air intake get an NRE when trying to symmetry? I had this problem in the past:http://imgur.com/a/0NkuB

Thanks for the tip on Tweakscale.

Have any of you noticed getting a null reference whenever trying to double symmetry any part. Initially, I had this problem with B9 aerospace, specifically it's jet engines (CF34 and TE turbojet), but quickly exploded into the stock parts. The Stock parts just get NullReferenceException, and that's it. http://imgur.com/a/0NkuB

Whenever I attempt to attach the turbojets CF34 and TE Turbojet, I get this null reference: http://imgur.com/a/0NkuB