Any luck with TAC getting this resolved? I am running into it on anupgrade andit is holding me up.

Has this issue been resolved? I ran into last Friday after attempting to upgrade form CM 4.1 to CUCM 8.6. The older gateways on 12.4.15 code all showed this same cause code, my two 15.X gateways worked fine. I never did get to trouble shoot it as th...