[UnityAppController renderingAPI] called before [UnityAppController selectRenderingApi]

After upgrade to unity 5 and my app crash on startup on iPod touch 5, but runs ok on iPhone 6. Log shows the following message:

Jun 13 17:53:07 jacky-iPod TestProject[24012] <Warning>: *** Assertion failure in -[MyAppController renderingAPI], /Users/workspace/COD_iOS/XCodeProject/Classes/UnityAppController+Rendering.mm:110

Jun 13 17:53:07 jacky-iPod TestProject[24012] <Warning>: Uncaught exception: NSInternalInconsistencyException: [UnityAppController renderingAPI] called before [UnityAppController selectRenderingApi]

	(

		0   CoreFoundation                      0x2d9d7f63 <redacted> + 154

		1   libobjc.A.dylib                     0x37cec6af objc_exception_throw + 38

		2   CoreFoundation                      0x2d9d7e25 <redacted> + 0

		3   Foundation                          0x2e37ffe3 <redacted> + 90

		4   TestProject                         0x000147e9 TestProject + 59369

		5   TestProject                         0x00025d7f TestProject + 130431

		6   TestProject                         0x00eedda5 TestProject + 15629733

		7   UIKit                               0x301bb2ff <redacted> + 274

		8   UIKit                               0x301bad4f <redacted> + 1390

		9   UIKit                               0x301b5353 <redacted> + 714

		10  UIKit                               0x3015041f <redacted> + 3130

		11  UIKit                               0x3014f721 <redacted> + 72

		12  TestProject                         0x00eec79f TestProject + 15624095

		13  UIKit                               0x301b4b3d <redacted> + 664

		14  GraphicsServices                    0x325fc70d <redacted> + 608

		15  GraphicsServices                    0x325fc2f7 <redacted> + 34

		16  CoreFoundation                      0x2d9a29df <redacted> + 34

		17  CoreFoundation                      0x2d9a297b <redacted> + 346

		18  CoreFoundation                      0x2d9a114f <redacted> + 1398

		19  CoreFoundation                      0x2d90bc27 CFRunLoopRunSpecific + 522

		20  CoreFoundation                      0x2d90ba0b CFRunLoopRunInMode + 106

		21  UIKit                               0x301b3dd9 <redacted> + 760

		22  UIKit                               0x301af049 UIApplicationMain + 1136

		23  TestProject                         0x0000c0fb TestProject + 24827

		24  libdyld.dylib                       0x381f4ab7 <redacted> + 2

	)

Jun 13 17:53:07 jacky-iPod TestProject[24012] <Error>: *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '[UnityAppController renderingAPI] called before [UnityAppController selectRenderingApi]'

Anybody knows what the problem is?

Finally, it is fixed by switch Graphics API from OpenGLES3 to OpenGLES2