Hi,
I have a fresh install of VS2010 Ultimate (version 10.0.30319.1) on Windows 7 Professional, which crashes on start up if I have VA (build 1859) installed. 
I can make the crash go away if I delete (or rename) the C:\\Users\\adann\\AppData\\Local\\Microsoft\\VisualStudio\\10.0\\Extensions directory after which I get this pop up.

If I look at the generated ActivityLog.xml file the only references to Visual Assist are:
 <entry>
    <record>20860</record>
    <time>2011/11/22 16:20:13.946</time>
    <type>Information</type>
    <source>VisualStudio</source>
    <description>Begin package load [Visual Assist X]</description>
    <guid>{44630D46-96B5-488C-8DF9-26E21DB8C1A3}</guid>
  </entry>
  <entry>
    <record>20861</record>
    <time>2011/11/22 16:20:13.948</time>
    <type>Information</type>
    <source>VisualStudio</source>
    <description>Loading UI library</description>
    <guid>{44630D46-96B5-488C-8DF9-26E21DB8C1A3}</guid>
    <path>C:\\Users\\adann\\AppData\\Local\\Microsoft\\VisualStudio\\10.0\\Extensions\\Whole Tomato Software\\Visual Assist X\\10.6.1859.0*\\VaPkgUI.dll</path>
  </entry>
I'm not familiar with what this should look like, but the path to VaPkgUI.dll looks odd with the asterix in it?
Any ideas what might be causing this?
Thanks.