The offending command that msi executes is:
.\devenv.com /command "View.Toolbox" /setup
This fails with Date execution prevention error.
devenv.exe log contains a bunch of errors like this:
<entry>
<record>120</record>
<time>2008/10/21 12:32:01.277</time>
<type>Warning</type>
<source>Microsoft Visual Studio Appid Stub</source>
<description>CheckPackageSignature failed; invalid Package Load Key</description>
<guid>{0C6E6407-13FC-4878-869A-C8B4016C57FE}</guid>
</entry>
And ends with:
<entry>
<record>122</record>
<time>2008/10/21 12:32:05.817</time>
<type></type>
<source>Microsoft Visual Studio</source>
<description>Destroying Main Window</description>
</entry>
Help?