Unfortuantely, completely Non-Functional now in LM 19.1 reports: "An Error has Occured". I spent hours trying to get it to work. No Joy. Try Gisomount... Works for me.
If you don't want to have to mount ISO's using the command line, this is for you.
einfach in der nutzung - genial fuer alle die nicht auf der console arbeiten moechten