(gnumeric:26584): GLib-CRITICAL **: g_convert: assertion `str != NULL' failed (gnumeric:26584): GLib-CRITICAL **: g_convert: assertion `str != NULL' failed (gnumeric:26584): GLib-CRITICAL **: g_convert: assertion `str != NULL' failed (gnumeric:26584): GLib-CRITICAL **: g_convert: assertion `str != NULL' failed (gnumeric:26584): GLib-CRITICAL **: g_convert: assertion `str != NULL' failed (gnumeric:26584): GLib-CRITICAL **: g_convert: assertion `str != NULL' failed (gnumeric:26584): GLib-CRITICAL **: g_convert: assertion `str != NULL' failed (gnumeric:26584): GLib-CRITICAL **: g_convert: assertion `str != NULL' failed (gnumeric:26584): GLib-CRITICAL **: g_convert: assertion `str != NULL' failed (gnumeric:26584): GLib-CRITICAL **: g_convert: assertion `str != NULL' failed (gnumeric:26584): GLib-CRITICAL **: g_convert: assertion `str != NULL' failed (gnumeric:26584): GLib-CRITICAL **: g_convert: assertion `str != NULL' failed (gnumeric:26584): GLib-CRITICAL **: g_convert: assertion `str != NULL' failed (gnumeric:26584): GLib-CRITICAL **: g_convert: assertion `str != NULL' failed (gnumeric:26584): GLib-CRITICAL **: g_convert: assertion `str != NULL' failed (gnumeric:26584): GLib-CRITICAL **: g_convert: assertion `str != NULL' failed