The problem is that you can not assign Ctrl+H or that the command does not work ? (do it work in if you place it in the menu or or places)
Some key combination do conflict with key combination that are builtin into UI components that are in focus.
But Ctrl+H should not conflict.. ( I think ), It works when I try to recreate it
Maybe it can't access the network path ? does it work if you change path to a local path?