VS 2005 Beta 2 Invalid Help Collection

I've installed VS 2005 Beta 2 and the associated help files. When i try
running "MSDN Library for Visual Studio 2005 Beta I get the following message:

Microsoft Document Explorer cannot be shown because the specified help
collection 'ms-help://MS.MSDNQTR.v80' is invalid

I get a similiar message when trying to run teh MSDN library archive saying

Microsoft Document Explorer cannot be shown because the specified help
collection 'ms-help://MS.MSDNARCHIVE' is invalid

When using Help within VS no local contants are shown.

The installing was into a virtual PC with a clean install of WINXP SP2. I've
tried installing MSDN from an attached ISO image, from the host PC via a
shared folder and by copying the MSDN files into a folder on the virtual PC
but nothing works.

Any suggestions?






.