I am using a MindRacer and when I connecting to QGC and try to config flight mode, when I select "multi-channel mode selection", the QGC just quit abnormally.
Why is that?
Which version of firmware are you using?
I am using latest stable v1.3.2 PX4
There is a known bug in v1.3.2, that lead to this problem.
It has been reported to the px4 community, and wait for their next fix.