Here is a fix for the Cannot use a leading .. to exit above the top directory issue on Codeplex. Just add the folder and contents to the root of your BE installation. I ran it for a full day and had no errors with GoogleBot or Slurp. However, as soon as I removed it, error after error after error. We worked a couple of coding overrides in the default.aspx, which is still there in the download as of this post, but it did not take care of the issue. We will do something different. This is not going to be the long view fix.
App_Browser.zip
334d6330-ea4d-4260-ab2e-ebd4df0c2906|1|1.0
BlogEngine.Net, General