Thanks for the reply. After restoring back to the previous version the only issue is that I get the message "Updating License" stuck at 50%
It usually disappears after I load a project (not always) but at least I can use the animation plug in. I´m right in the middle of an important animation project and I really don´t want to risk my work flow stopping.
Will it help if I do an uninstall first then upgrade? As I said before, in the past all I have had to do was just run the update and it installed over the old version and everything worked fine. No need to update license or no loss of animation plugin.
It´s the first problem I´ve had upgrading.
I will try again in the meantime.