After unlinking the sigil from all equipment templates and relinking it again problem disapperead.I still managed to get an error and crash after using it on ascended weapon.After logging in I used it just fine on the same weapon even tried it on different one problem is gone for now.I have no idea how to reproduce it so I won't be surprised if it happens again. I've tried this on ascended weapon and the different behaviour is interesting to say the least.