Not possible link in tree?

[$bill]

Although I have used it successfully many times previously, I can't get the URL Syntax to work here either (Win7sp1, URp 4.2.1.0)

Item command-line format>> ur://%DB_URL%?item=%ITEM%

Using Item | copy item command line and pasting to the command prompt, returns the error message >>'ur:' is not recognized as an internal or external command, operable program or batch file.