Does anyone else have this problem?
The full message in the status bar says,
Loading toolbox content from package 'Microsoft.VisualStudio.IDE.ToolboxControlsInstaller.ToolboxInstallerPackage' {D766DAA8-F81E-4621-9184-F21C7F389796}
This usually happens whenever I open a xaml file and VS sits there, unresponsive, for about 2 minutes.
This usually happens when opening the Toolbox (CTRL-ALT-X), or moving the mouse over the Toolbox icon (which appears on the left).
According to this Connect issue report, there's a workaround to be done, which may fix the issue:
He said he simply removed the registry key under:
[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\
VisualStudio\10.0\Packages\{D766DAA8-F81E-4621-9184-F21C7F389796}
and the problem went away. Read more on that link.
I had the same issue. I started VS with logging enabled as explained here. Once VS had started and froze on attempting to load the toolbox, I read the log file. I searched for "Warning" and the first entry was the following.
<entry>
<record>39</record>
<time>2013/03/07 22:30:32.671</time>
<type>Warning</type>
<source>VisualStudio</source>
<description>The CTM file is out of date and should be deleted and rebuilt, but the file 'C:\ProgramData\Microsoft\VisualStudio\10.0\1033\devenv.CTM' could not be deleted.</description>
</entry>
I ran VS as administrator, waited until it locked up. I used task manager to kill the VS process. I ran VS as administrator once again, and used task manager to kill the process. I then ran VS as I normally would. It took a moment to load the toolbox items, but didn't freeze. I closed VS again, and opened it as I normally would, and it loaded instantly as it normally would.