Description of problem: I think I update metadata of a picture while it was writing metadata out. I configured shotwell to write to files. That was on the console: (shotwell:13961): GLib-CRITICAL **: g_timer_start: assertion `timer != NULL' failed (shotwell:13961): GLib-GObject-WARNING **: invalid cast from `DataView' to `ThumbnailView' (shotwell:13961): GLib-GObject-WARNING **: invalid cast from `DataView' to `ThumbnailView' (shotwell:13961): GLib-GObject-WARNING **: invalid cast from `DataView' to `ThumbnailView' (shotwell:13961): GLib-GObject-WARNING **: invalid cast from `DataView' to `ThumbnailView' ** ERROR:/builddir/build/BUILD/shotwell-0.12.3/src/MetadataWriter.vala:553:metadata_writer_on_photo_dequeued: assertion failed: (!_tmp2_) Version-Release number of selected component: shotwell-0.12.3-1.fc17 Additional info: libreport version: 2.0.18 abrt_version: 2.0.18 backtrace_rating: 4 cmdline: shotwell crash_function: metadata_writer_on_photo_dequeued kernel: 3.6.10-2.fc17.x86_64 truncated backtrace: :Thread no. 1 (8 frames) : #4 metadata_writer_on_photo_dequeued at /usr/src/debug/shotwell-0.12.3/src/MetadataWriter.vala:553 : #5 _metadata_writer_on_photo_dequeued_dequeued_callback at /usr/src/debug/shotwell-0.12.3/src/MetadataWriter.vala:143 : #6 timed_queue_on_heartbeat at /usr/src/debug/shotwell-0.12.3/src/TimedQueue.vala:194 : #7 _timed_queue_on_heartbeat_gsource_func at TimedQueue.c:248 : #13 gtk_main at gtkmain.c:1161 : #14 application_start at /usr/src/debug/shotwell-0.12.3/src/Application.vala:44 : #15 library_exec at /usr/src/debug/shotwell-0.12.3/src/main.vala:231 : #16 _vala_main at /usr/src/debug/shotwell-0.12.3/src/main.vala:448
Created attachment 677168 [details] File: core_backtrace
Created attachment 677169 [details] File: environ
Created attachment 677170 [details] File: limits
Created attachment 677171 [details] File: backtrace
Created attachment 677172 [details] File: cgroup
Created attachment 677173 [details] File: smolt_data
Created attachment 677174 [details] File: executable
Created attachment 677175 [details] File: maps
Created attachment 677176 [details] File: dso_list
Created attachment 677177 [details] File: proc_pid_status
Created attachment 677178 [details] File: build_ids
Created attachment 677179 [details] File: open_fds
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