Using a skeletal mesh with ETC1 device causes crash

I’ve been getting a crash on android 6 any time a skeletal mesh is in an actor. It runs fine without them but gives me a

LogPlayLevel: Error:   03-12 16:41:36.435  1441  1677 D UE4     : Fatal error: [File:D:\Build\++UE4\Sync\Engine\Source\Runtime\OpenGLDrv\Private\OpenGLShaders.cpp] [Line: 3718]

every time.

Here is the logcat:

The call stack is in there. I’m not exactly sure what is going on yet but thought I would ask around in case someone else experienced this or it is documented somewhere.