Steps to reproduce:
1. right click on a file or directory and select "Create Archive";
2. when dialog appears, before it selects the current directory in the "Position" combobox (when it is empty), try to click on "Create" button;
3. it crashes.


Stack trace:
Distribution: Unknown
Gnome Release: 2.20.1 2007-10-19 (Archlinux)
BugBuddy Version: 2.20.1

System: Linux 2.6.23-ARCH #1 SMP PREEMPT Mon Nov 26 21:15:02 UTC 2007 i686
X Vendor: The X.Org Foundation
X Vendor Release: 10400000
Selinux: No
Accessibility: Disabled
GTK+ Theme: Clearlooks
Icon Theme: blendedcrystal-lite

Memory status: size: 0 vsize: 0 resident: 0 share: 0 rss: 0 rss_rlim: 0
CPU usage: start_time: 0 rtime: 0 utime: 0 stime: 0 cutime:0 cstime: 0 timeout: 0 it_real_value: 0 frequency: 0



----------- .xsession-errors ---------------------
(file-roller:12491): libgnomevfs-CRITICAL **: gnome_vfs_uri_new_private: assertion `text_uri != NULL' failed
(file-roller:12572): Gtk-CRITICAL **: gtk_file_system_path_to_uri: assertion `path != NULL' failed
(file-roller:12572): libgnomevfs-CRITICAL **: gnome_vfs_uri_new_private: assertion `text_uri != NULL' failed
(file-roller:12628): Gtk-CRITICAL **: gtk_file_system_path_to_uri: assertion `path != NULL' failed
(file-roller:12628): libgnomevfs-CRITICAL **: gnome_vfs_uri_new_private: assertion `text_uri != NULL' failed
18.12.2007 01:05:07 Queue[0] : 1804892909
(file-roller:12867): Gtk-CRITICAL **: gtk_file_system_path_to_uri: assertion `path != NULL' failed
(file-roller:12867): libgnomevfs-CRITICAL **: gnome_vfs_uri_new_private: assertion `text_uri != NULL' failed
--------------------------------------------------


Other information: