I have a nautilus bookmark for "smb://192.168.42.4/".
Opening some nautilus window, then selecting it from the bookmarks menu works (no password required!).
Selecting the very same bookmark from Places->Bookmarks gives the error message:
--------------
Could not open location 'smb://192.168.42.4/'
No application is registered as handling this file
--------------
I have a nautilus bookmark for "smb:// 192.168. 42.4/".
Opening some nautilus window, then selecting it from the bookmarks menu works (no password required!).
Selecting the very same bookmark from Places->Bookmarks gives the error message: 192.168. 42.4/'
--------------
Could not open location 'smb://
No application is registered as handling this file
--------------