Imu error won't fly or manual start

[BlueGoose]

Tried flying today, after flying yesterday. Keep getting IMU initializing error, don't move aircraft. How long does it usually take to initialize? I was getting this error day before as well but had lifted off and flew. Engine's won't start manually either, keep getting same error.
Please Help

 

[tevek]

That particular warning is fairly recent with the GO app updates. I use that opportunity to check my settings before I fly and found that by doing a new IMU calibration that corresponded with the change in climate (Autumn/winter) reduced my warm up time from 3 mins to to about 20 seconds.