I just finished installing 4.5 Beta 13 (4.50.0.1780). This is the second or third beta upgrade where I have had to kill the Logos Com launcher by going into task manager and killing it before it would run the update.
Now, it MAY be related to the fact that I'm running Procdump all of the time in order to catch an elusive crash I've been experiencing, but I can't be sure.
Setup log is attached.