In "Tutorial 6: Creating and Using User Control Libraries"
I had to change the copy command i the pre-build event command-line field from this:
copy $(SolutionDir)\MyUserControlLibrary\*.ascx $(ProjectDir)\UserControls\
to this:
copy "$(SolutionDir)MyUserControlLibrary\*.ascx" "$(ProjectDir)UserControls\"
(Remove slashes and add quotes).
Great tutorial, BTW.
Gary Davis