In a moment of folly I tried to upgrade MPLAB-X and MPLAB IPE (V5.05) to the later version V5.10 which I think is available and fixes problems with debugWire etc.
However I don't see any upgrade buttons on either programs. Do I just install the newer version and hopefully the old one will disappear or do I need to uninstall the old one first? Or will this cause earth shuttering events?