I just installed Visual Studio 2013 on my machine (which runs Windows 8.1 Enterprise Build 9600). I checked to include the Windows Phone 8 SDK option during install.

Once complete, I launched VS and tried a new Windows Phone App project.

Created and built fine. However. when I tried to run on the emulator, I get the error:
Xap packaging failed. Cannot access a closed Stream.
... and ...
Could not find file 'c:\users\wade\documents\visual studio 2013\Projects\DataBoundApp1\DataBoundApp1\obj\Debug\XapCacheFile.xml'. Please rebuild the solution and try again.
Tried a clean and rebuild but still occurs. Also happens with the data bound app project.
So, I tried installing some of the SDK updates found here: http://developer.windowsphone.com/en-us/downloadsdk. All installed without a problem; however, when I tried again I got the same error.
Note: the emulator starts and runs just fine. The problem is creating the phone package and deploying to the emulator.
I'm not sure how to fix. Anyone have this issue?
UPDATE:
I have tried reinstalling the Windows Phone 8.0 SDK and all the updates. I should note that I also have VS 2012 installed and I also cannot create a Windows Phone 8 app in VS2012.
Here's an image of the WP8 stuff installed:
