Answer by Russel

This is a NGUI Bug. Downgraded to NGUI 3.0.8f4 not crash! The Sony Xperia Z Ultra is a new device with this crash, because Android KitKat now rolling out to Sony Xperia Z Ultra. Here are the the crash candidates (all Android-KitKat with OpenGL ES supported devices, but not the Nexus devices) http://en.wikipedia.org/wiki/OpenGL_ES#OpenGL_ES_3.0_2