Squish the bugs. Real blog post coming soon.
There was an issue with some of the features when a password protected VBA Project was loaded. This caused several of the tool window, most notably the Test Explorer, to fail to open. As many of the more popular add-ins are password protected, this was a pretty big problem.
This has been corrected and the 32bit installer is available now. This post will be updated when the 64bit installer is available.