PHP Warning Error While Sending Query Packet

[xplanedotorg]

Seeing several errors related to invision forum pages beginning with "PHP Warning: Error While sending QUERY packets".  I've search the internet and everything I've read is that my max_allowed_packet variable in my.cnf is too low.  I've been raising it steadily but error has not gone away.  Has anyone else had this issue?  What did you do to fix it?  I'm using Apache 2.4.10, PHP 5.5, and Maria DB 10.0.15. 

Thank you for any assistance.

[CodingJungle]

could also be caused by DB being accessed over a closed connection (causing a timeout), might want to fiddle with those settings too (or ask your host to pick optimal settings for you on it).