Hey guys, I just attempted to place down a mirror from 1.10.2 version of MrCrayfish furniture mod and it crashed me instantly.
I have found that issue #156 describes this as I had just experienced.
Here is the crash report I recently just got which was generated from the crash.
Hope this can be fixed.

Check the issue you mentioned for my reply

Seems to been have fixed in this PR Growlith1223/ArsMagica2#305