Referencer fails to open a document in a remote location via right click if the remote location is not connected yet

To reproduce in version 1.2.1:

1) Open your library that has documents located in a CIFS file system.
2) Choose a document that is in such remote file system.
3) Right click on it.
4) Select "Open".
5) The document will not open. An error message will show up.

Notice though that the remote file system should not be connected yet for this to happen.

The desired behaviour should be the same as if, in step (4), you choose "Properties" and click in the "File" entry of the properties window. In this case, Gnome will ask your username and password, connect you to the file system and Referencer will open the document for you.