Error Deleting Portal

Reecently whilst doing some administration work on one of my sets of portals I wanted to delete an old web site, which had been moved to a different portal set. Unfortunately, whilst issuing the delete command for the portal I received the following error.

 

Error: Edit Portals is currently unavailable. DotNetNuke.ModuleLoadException: Invalid File or Directory attributes value. ---> System.ArgumentException: Invalid File or Directory attributes value. at System.IO.File.SetAttributes(String path, FileAttributes fileAttributes) at DotNetNuke.Globals.DeleteFolderRecursive(String strRoot) at DotNetNuke.Globals.DeleteFolderRecursive(String strRoot) at DotNetNuke.SiteSettings.Delete_Click(Object sender, EventArgs e) --- End of inner exception stack trace ---

I have found that this error is the result of directories within the portal structure which DNN is not expecting.  In my particular example this was a version 1 DotNetNuke portal, which had been converted into a version 2.1.2. My solution to the problem was to delete all sub-directories within the portal.  When the delete command is then issued the portal is deleted correctly.

NAT September 2005 (Revised)