I am using the 2.63 lockdown and amhaving a problem with a softlimit error "Z MAX" i knew this to be incorrect.

I found that i had a length offset that shouldn't have been i removed it and still had the problem.

I cleared the error by closing the gcode and then reloading it when it then worked fine

I have also sometimes been able to just clear an error by "edit the gcode" scroll to the end close gcode and that also will clear the error.

Mach is somehow retaining stuff in cache memory ?

Phil