guest not logging in

I have vista Beta 2 Build 5308 (going to update soon) and cannot use the guest account it comes up with a message like this ' The Service Failed the logon. User profile cannot be loaded'
What is the matter?
Any replies

It's a known bug - should be fixed in the later build.
-- Zack Whittaker » ZackNET Enterprises: www.zacknet.co.uk » MSBlog on ResDev: www.msblog.org » Vista Knowledge Base: www.vistabase.co.uk » This mailing is provided "as is" with no warranties, and confers no rights. All opinions expressed are those of myself unless stated so, and not of my employer, best friend, Ghandi, my mother or my cat. Glad we cleared that up!
--: Original message follows :-- "Tris123" wrote in message

I have vista Beta 2 Build 5308 (going to update soon) and cannot use the guest account it comes up with a message like this ' The Service Failed the logon. User profile cannot be loaded'
What is the matter?
Any replies