Hello,
had an iClone version working, and accepted Reallusion HUB update:
it uninstalled previous version then got stuck installing the new one (said something about install error).
Same happened for 3DXchange.
So now I cannot install any iClone version.
PLEASE HELP 
PLEAAAAAASE

Solved uninstalling iClone through control panel EVEN IF it didn't compare anymore in Reallusion HUB list and there was no more any iClone icon on desktop