The game crash when use MeshCollider, build target: ios6

The game crash when use MeshCollider, build target: ios6.1.3

the same project runs well above ios 7.0. but always crash in ios 6.1.3. the crash tips is: dyld`dyld_fatal_error: → 0x2fe780c4 <+0>: trap
0x2fe780c8 <+4>: nop
.Finally i found the game can runs well after i remove MeshCollider in ios6.1.3. I want to know how it cause my game crash, and how can i delt with it. thanks for help.

According to your description and target device, I would say it is a problem of performance : is your model too complex(high number of vertices and faces) ? try replacing the mesh collider with a primitive collider and let me know if it fixes the problem