UMS5 Active levelling could not be performed

[RogueWave 5]

Working fine for months then bed leveling issues

did all the info online i.e. clean bed, clean nozzles, reset printer...even new glass plate 

then it worked few times back to manual leveling done .......... but when new job is started, leveling failed

 

any suggestions??

 

thanks

 

latest Cura and firmware installed

 

[RogueWave 5]

Switching the nozzle from 2 to 1 and 1 to 2 solved the problem.....it's deep in the support pages online......wish that appeared instead of a short brief on what to do.....acces to complete data is a problem.......