Obviously I am not the only one having probems with v12.  A the moment it is trying to:-  "Saving Project and updating files ... "  -  It has been going for quite a while and I doubt that it will complete?  If I do a forced stop it, I will probably lose my work and it will come back with a message that it was not saved correctly (or something similar).  The files may then be unreliable.  Regret paying money for an "Upgrade" that is not going to work?  Am on Windows v10 and upgraded everything last night.  Will go through the steps for .NET Framework and for C++ but have lost confidence in this product.