Hi @Sam_K,
Sorry this message wasn’t seen earlier 
The latest and greatest is currently 2.1.3 and 2.1.4 will be out shortly.
Did you upgrade since having this problem? If not, you should. The 2.1 branch has fixed a few issues related to IllegalReferenceCountException.
Can you confirm if the issue is still there and if it went away after upgrading?
Thanks