Что за ошибка вылазит? Не могу установить windows phone sdk 7.1

You can get the log files with the following steps:
1) Download collect.exe from the link below. http://go.microsoft.com/?LinkId=8967043
2) You may choose to save the tool for later use, or to run directly.
3) The utility creates a compressed cabinet of all the VS and .NET logs to %TEMP%\vslogs.cab.

You can get more details about how to get the log files here:
http://blogs.msdn.com/heaths/archive/2008/05/09/visual-studio-and-net-log-collection-utility.aspx