cannot install visual studio 11 preview
I use vista sp2 and have vs 2005/8/10 installed.

I try to install vs 11 preview using the web installer but immediately get a message "setup blocked" (see image). the linked log just has many lines like

    [1424:1894][2011-09-17T22:13:51.749+02:00]: Detected package: netfx_dtpmsi_1048, state: Present, cached: No


any idea?

![enter image description here][1]


  [1]: http://i.stack.imgur.com/0Z2F3.jpg
cannot install visual studio 11 preview
===

I use vista sp2 and have vs 2005/8/10 installed.

I try to install vs 11 preview using the web installer but immediately get a message "setup blocked" (see image). the linked log just has many lines like

    [1424:1894][2011-09-17T22:13:51.749+02:00]: Detected package: netfx_dtpmsi_1048, state: Present, cached: No


any idea?

![enter image description here][1]


  [1]: http://i.stack.imgur.com/0Z2F3.jpg