Quad 'stuck' in RTL

Hello All,
A random glitch (Arducopter 3.2.1).
My quad randomly gets ‘stuck’ at the hover on executing RTL (either manually or via MP auto)
A tiny flick of the yaw stick initiates a normal descent and land.
Any ideas please ?

@SteveinFrance,
Please provide tlogs and/or dataflash logs to help troubleshoot your issue.
Regards,
TCIII GM

Sorry, I can see the tlc file (0 bytes) in MP>Logs when I use MP>.telemetry logs) but it isn’t really there ‘(this file in use’ when I try to access it)
Please can you explain what to do ?
Thanks

@SteveinFrance,
Try here: http://copter.ardupilot.com/wiki/common-mission-analysis/
Regards,
TCIII GM

Thanks again - I thought I’d done that.
I’ll try again.
All the best,
Steve

@SteveinFrance,
Here is an Auto Analysis of your bin log:
Size (kb) 0.0
No of lines 0
Duration 0:00:00
Vehicletype
Firmware Version
Firmware Hash
Hardware Type
Free Mem 0
Skipped Lines 0

Test: Autotune = NA -
Test: Balance/Twist = NA -
Test: Brownout = UNKNOWN - No CTUN log data
Test: Compass = FAIL - COMPASS_OFS_X not found
Test: Dupe Log Data = UNKNOWN - No ATT log data
Test: Empty = GOOD -
Test: Event/Failsafe = GOOD -
Test: GPS = UNKNOWN - No GPS log data
Test: IMU Mismatch = UNKNOWN - No IMU log data
Test: Parameters = GOOD -
Test: PM = NA -
Test: Pitch/Roll = NA -
Test: Thrust = NA -
Test: VCC = UNKNOWN - No CURR log data

Looks like you are not logging sufficient data for a meaningful analysis, but you do appear to have a couple of issues.
Regards,
TCIII GM

Thanks - doesn’t seem much data for 1.3 Megs !
Anything else I can do ?
Steve

@SteveinFrance,
Follow these Wiki steps to increase the amount of dataflash data being recorded: http://copter.ardupilot.com/wiki/common-downloading-and-analyzing-data-logs-in-mission-planner/#setting_what_data_you_want_recorded
Regards,
TCIII GM

Will do - might be a while before it sticks again but I’ll post to this thread.
Many thanks for your prompt help
Steve

Just a quick screen grab of the existing settings - seems there are more enabled than recorded.
Steve