Crash VisualStudio toolbox quando si aggiunge una scheda

Il problema si verifica quando sono installati i power commands
Posto parte del messaggio dal newsgroup di visualstudio, il metodo 1. da me ha funzionato :)

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After looking around the web, I could not find a perfect solution or workaround for this compatibility issue. I would suggest you to uninstall and wait for the next release of PowerCommands. In the meanwhile, I also found that product team has already known this issue and they are working on a fix on that right now. It is described at http://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=365943. I also put those possible solutions or workarounds I found from online community and they are just a reference for you. Although they are not proved to be 100% to solve this problem, you could have a try if you still want to use VS 2008 SP1 and PowerCommands altogether. For you convenience, I put how many efforts you may need so that you can determine if it is worth to have a try.1. (This method is quick to implement, about 5 minutes) Find devenv.exe.config in "C:\Program Files\Microsoft Visual Studio 9.0\Common7\IDE". Add following XML token to the dependentAssembly list just after office one.
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  <dependentAssembly>
                <assemblyIdentity name="office"
publicKeyToken="71e9bce111e9429c" culture="neutral"/>
                <codeBase version="12.0.0.0"
href="PrivateAssemblies\Office12\Office.dll"/>
            </dependentAssembly>
<!-NEW STUFF-->
            <dependentAssembly>
                <assemblyIdentity name="Microsoft.PowerCommands"
publicKeyToken="null" culture="neutral"/>
                <codeBase version="1.1.0.0" href="C:\Program Files
(x86)\PowerCommands\Microsoft.PowerCommands.dll"/>
            </dependentAssembly>
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After that please try "Choose Items" again and check if crash happens.2. (This method will take long time because it needs reinstall VS 2008 sp1 and .NET Framework 3.5 SP1, about 30 minutes) Uninstall the Visual Studio 2008 SP1,.NET Framework 3.5 SP1 and PowerCommands. Reinstall Visual Studio 2008 SP1 and .NET Framework 3.5 SP1 first and then install PowerCommands. Please don't use repair, some folders or files will not be updated during repair.