Per the instructions, I uninstalled beta 1 first, then tried to install beta 2. Below is the error messages that I get
1st error message -
failed to update cache for execution. program will exit
when I click OK, I get the error message below
Runtime error - this application requested the runtime to terminate it in an unusual way.
When I click ok, a visual studio just in time debugger window opens
and at the top of the window is this message
"a unhandled win 32 exception occurred in setupengine.exe 
I have win xp pro and visual studio 2010 pro installed
How do I fix this problem.