iOS Bug - Shader compile error

Lamont

Just in case ya'll are going nuts like I did. "Failed to compile shader" error, and after some digging found it was because I ticked "MCES_Constant" under Emissive in the Mobile Material editor. 100% reproducible (well for me). Un-tick and all is right with the world.

Anyone confirm wanna?
UDK Dec going to iPad 16GB.