I just noticed this yesterday:

I have a double tech'd dragon claw equipped also tech'd with Hunter's Retribution. I was in the middle of fighting against some T6 blights. I right click on teh claw to change some crystals and the client crashes.

I relog - try the same thing again - instant crash. When I logged back in I unequipped the claw and then was able to modify the crystals.

The crystals in the sockets were the AROP primal fury reward and the old time misty crystal that converted damage to etheral on 10% of hits.

I'm not sure what's causing it - it could be the claw itself or maybe the Hunter's retribution tech or one of the crystals.