Created attachment 4695 
full stacktrace

Hi,

This bug has been reported on our bugtracker:

"it crashed when I opened a Windows share from gigolo"

Stacktrace top:

thunar_util_parse_parent (parent=0x7f2c526b9000, window_return=0x7fff6c7ef578) at thunar-util.c:312
thunar_dialogs_show_error (parent=<optimized out>, error=0x7f2c528215b0, format=0x7f2c503f8ad1 <Address 0x7f2c503f8ad1 out of bounds>) at thunar-dialogs.c:292
thunar_location_entry_poke_file_finish (browser=0x7f2c52505aa0, file=<optimized out>, target_file=<optimized out>, error=0x7f2c528215b0, ignored=<optimized out>) at thunar-location-entry.c:421
thunar_browser_poke_file_finish (object=0x7f2c527ee4d0, result=<optimized out>, user_data=0x7f2c527f2f80) at thunar-browser.c:265
g_simple_async_result_complete (simple=0x7f2c527d1a30) at /build/buildd/glib2.0-2.32.0/./gio/gsimpleasyncresult.c:767

Looks like it crashed because gtk_widget_get_toplevel () returned NULL.

Thanks.