Stabilize Mode - Hard Rolls left and right then dive

Hi, I have a problem that when i switch to Stabilize mode, my glider is ok for a few seconds, then goes out of control.
I.e. it starts to bank heavily, flaps about and dives for the ground. I have avoided a crash by flicking back to manual to gain control.

During the flight, RTL and Loiter worked perfectly it’s just when i switch to Stabilize that it goes crazy.
On the ground i double checked the ailerons and rudder in Stabilize mode and they are correct - when left wing up, left aileron up/Rudder towards Left wing etc.

I tried to run Auto Analysis in Mission Planner but i get an error “Runner.exe has stopped working” - “Bad Input file” - has anyone got a fix?.

I have checked everything that i can and searched the forums to no avail.

Please can someone help me?

Here is the link to the .bin (20MB)

Here is my setup:
Taranis - OpenTX
Frsky - X8R
Multiplex Cularis
Phoenix ICE 75 esc
Mission Planner
Pixhawk PX4 - running latest plane FW 3.7.0
No Airspeed sensor
3DR GPS/Compass
Standard Pids except RC functions

Thank you