Windows Explorer opens a new window every time I click on a folder

I made the terrible mistake of installing Windows updates this morning.  Got to work and found that ever single time I open a folder in explorer, it launches a new explorer window.  Hunted around and didn't find a satisfactory solution.  Tried to post my fix on stackoverflow, but the issue was closed.  My solution:

1. From command prompt, regedit.
2. Go to HKEY_CLASSES_ROOT\Folder\shell\explore\command
3. Change (Default) from: %SystemRoot%\Explorer.exe /seperate, /e,/idlist,%I,%L
4. To: %SystemRoot%\Explorer.exe /e,/idlist,%I,%L

Sigh ... Windows ... bless its heart.