I can reproduce this bug in jaunty dropping from file roller 2.26.0 to nautilus 2.26.0.
console yields:
(file-roller:31737): GLib-GIO-CRITICAL **: g_file_new_for_uri: assertion `uri != NULL' failed
file-roller 2.26.0-0ubuntu2 nautilus 1:2.26.0-0ubuntu4
I can reproduce this bug in jaunty dropping from file roller 2.26.0 to nautilus 2.26.0.
console yields:
(file-roller: 31737): GLib-GIO-CRITICAL **: g_file_new_for_uri: assertion `uri != NULL' failed
file-roller 2.26.0-0ubuntu2
nautilus 1:2.26.0-0ubuntu4