I started Visual Studio 2013 this morning and opened the About dialog to make sure that I was running Update 1 on this particular machine.  Before the About dialog was displayed, I got the following error dialog:

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Microsoft Visual Studio
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The 'CctSharedPackage' package did not load correctly.

The problem may have been caused by a configuration change or by the installation of another extension. You can get more information by examining the file 'C:\Users\...\AppData\Roaming\Microsoft\VisualStudio\12.0\ActivityLog.xml'.

Continue to show this error message?
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Yes   No  
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Ack!  What happened?  Apparently this is an issue with the Windows Azure Tools for Microsoft Visual Studio 2013 - v2.2.  Although further research shows that it's a problem with previous versions of the Azure SDK, as well.  So, I went to Control Panel, opened "Programs and Features", right-clicked on "Windows Azure Tools for Microsoft Visual Studio 2013 - v2.2", and clicked "Change".  In the "Modify Setup" dialog that appeared and clicked "Repair".  This fixed the problem.

Rob