[Bug 29005] run dialog(alt-f2) is giving non-usable error message

[Stefan Bethge]

Public bug reported:
https://launchpad.net/malone/bugs/29005

Affects: gnome-panel (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

Description:
When entering a non-existant command into the run dialog and pressing
enter, the error message

Could not open location 'file://asd'

Details: Unknown error code: 13

Pops up - that's rather cryptic and non-informative for a random user. I
would expect either a shaking window like in gnome-screensaver or a more
useful message.