Hello, 
 
	I spent forty minutes testing this extensively with 1.5.2 and ran into no issues. Tests were:
 
		Failure, no CAS message, HDG to NAV
	
	
		Failure, no CAS message, NAV to HDG to NAV
	
	
		Failure, CAS message, HDG to NAV
	
	
		Failure, CAS message, NAV to HDG to NAV
	
	
		All of the above with new directs
	
	
		Engine failure, HDG to NAV, HDG to APPR
	
	Looking at your log it's definitely the Challenger crashing but it's just the same as last time. I will refer this back to the developer.