Large Number of Stacks Automatically Loading at Rev Startup

[Steven Axtell]

When I launch Rev, I see that a large number of stacks are loading up automatically.  They include Home, revFileAssociations, Message Box, revAnimation, revPlaybackOptions .... revColorPopup.

What is causing this?  I must have changed some setting that I was unaware of.  

Thanks,

Steve Axtell