Here is the gdb output and stacktrace and bug report ---------------- (gdb) run Starting program: /usr/local/bin/gretl_x11 [New Thread 3860.0x14bc] [New Thread 3860.0x162c] [New Thread 3860.0x1330] [New Thread 3860.0x990] [New Thread 3860.0xd8c] Program received signal SIGILL, Illegal instruction. 0x004da50c in date (nt=0, pd=1, sd0=1) at ../lib/src/gretl_utils.c:58 58 (gdb) bt #0 0x004da50c in date (nt=0, pd=1, sd0=1) at ../lib/src/gretl_utils.c:58 #1 0x004f1c75 in ntodate (datestr=0x22ba60 "x\334\017 \024", t=0, dset=0x200474b0) at ../lib/src/dataio.c:742 #2 0x0047cd56 in set_sample_label (pdinfo=0x200474b0) at menustate.c:718 #3 0x0045ea6a in mark_dataset_as_modified () at gui_utils.c:695 #4 0x0045eb52 in real_register_data (flag=5, user_fname=0x0, list=0x0) at gui_utils.c:776 #5 0x004182dc in dwiz_make_changes (dlg=0x202950d0, opts=0x202a2ed0, dwinfo=<optimized out>) at datawiz.c:363 #6 dwiz_finalize (dlg=0x202950d0, dwinfo=<optimized out>, cancel=<optimized out>) at datawiz.c:1668 #7 0x6f5b575f in g_closure_invoke () from /cygdrive/c/cygwin/bin/cyggobject-2.0-0.dll #8 0x6f5c79d9 in g_signal_handler_disconnect () from /cygdrive/c/cygwin/bin/cyggobject-2.0-0.dll #9 0x6f5cf5c6 in g_signal_emit_valist () from /cygdrive/c/cygwin/bin/cyggobject-2.0-0.dll #10 0x6f5cf736 in g_signal_emit () from /cygdrive/c/cygwin/bin/cyggobject-2.0-0.dll #11 0x6ae63d59 in gtk_button_clicked () from /cygdrive/c/cygwin/bin/cyggtk-x11-2.0-0.dll #12 0x6ae64e00 in gtk_button_get_alignment () from /cygdrive/c/cygwin/bin/cyggtk-x11-2.0-0.dll #13 0x6f5b575f in g_closure_invoke () from /cygdrive/c/cygwin/bin/cyggobject-2.0-0.dll #14 0x6f5c7233 in g_signal_handler_disconnect () from /cygdrive/c/cygwin/bin/cyggobject-2.0-0.dll #15 0x6f5cf5c6 in g_signal_emit_valist () from /cygdrive/c/cygwin/bin/cyggobject-2.0-0.dll #16 0x6f5cf736 in g_signal_emit () from /cygdrive/c/cygwin/bin/cyggobject-2.0-0.dll #17 0x6ae63cb9 in gtk_button_released () from /cygdrive/c/cygwin/bin/cyggtk-x11-2.0-0.dll #18 0x6ae63ce1 in gtk_button_released () from /cygdrive/c/cygwin/bin/cyggtk-x11-2.0-0.dll #19 0x6af0cee1 in gtk_marshal_VOID__UINT_STRING () from /cygdrive/c/cygwin/bin/cyggtk-x11-2.0-0.dll #20 0x6f5b575f in g_closure_invoke () from /cygdrive/c/cygwin/bin/cyggobject-2.0-0.dll #21 0x6f5c7829 in g_signal_handler_disconnect () from /cygdrive/c/cygwin/bin/cyggobject-2.0-0.dll #22 0x6f5cf401 in g_signal_emit_valist () from /cygdrive/c/cygwin/bin/cyggobject-2.0-0.dll #23 0x6f5cf736 in g_signal_emit () from /cygdrive/c/cygwin/bin/cyggobject-2.0-0.dll #24 0x6b023786 in gtk_widget_get_realized () from /cygdrive/c/cygwin/bin/cyggtk-x11-2.0-0.dll #25 0x6af0b463 in gtk_propagate_event () from /cygdrive/c/cygwin/bin/cyggtk-x11-2.0-0.dll #26 0x6af0b80f in gtk_main_do_event () from /cygdrive/c/cygwin/bin/cyggtk-x11-2.0-0.dll #27 0x67bbc5c6 in gdk_x11_register_standard_event_type () from /cygdrive/c/cygwin/bin/cyggdk-x11-2.0-0.dll #28 0x6f78cb08 in g_main_context_dispatch () from /cygdrive/c/cygwin/bin/cygglib-2.0-0.dll #29 0x6f78d208 in g_main_context_dispatch () from /cygdrive/c/cygwin/bin/cygglib-2.0-0.dll #30 0x6f78d6e1 in g_main_loop_run () from /cygdrive/c/cygwin/bin/cygglib-2.0-0.dll #31 0x6af0a7fd in gtk_main () from /cygdrive/c/cygwin/bin/cyggtk-x11-2.0-0.dll #32 0x00456b1b in main (argc=1, argv=0x22ccb0) at gretl.c:694 (gdb) list 53 * 54 * Returns: the date corresponding to @nt, as a double-precision number. 55 */ 56 57 double date (int nt, int pd, const double sd0) 58 { 59 int ysd = (int) sd0, yy, pp, yp; 60 int p10 = 10; 61 62 if (pd == 1) { -------------------------- Bug report https://sourceforge.net/tracker/?func=detail&aid=3504570&group_id...