I hope this is the correct forum to post this to... Recently the help system for all of my development tools (Microsoft and 3rd party) and even some applications like SQL Server 2005 has stopped working, no Table of Contents, error messages on searching or filtering, etc.  The last thing I recall installing was Silverlight, but don't know if this is related at all.  Has anyone else experienced this, or can point me to some possible fixes?  I have tried to repair the installation from Add/Remove Programs with no luck.