3.5.0 rc4 user Here+RTK is Crashed

ArduCopter Copter 3.5
1

Hello everyone，my copter flash in 3.5.0 rc4 firmware。but this firmware have random bug。。。some problem
in log 。the same route，First time is perfect，but second time is Crashed。00000058.BIN (904 KB)

2

QQ截图20170425173417.png1833×437 15 KB