Crash Dump Data detected

I have recently tried the firmware arducopterv4.6.3 with git hash Mission Planner 1.3.81 build 1.3.8741.25556 ArduCopter V4.6.3 (bceaa3e0). I encountered crash dump data detected error. I have attached the crashdump.bin file. Please check and let us know what’s the exact error.

crash_dump.bin (62.1 KB)