Sorry, I think I do not yet use gdb properly. In particular, I do not know how to save the backtrace in a file. At least I could display it, but it showed mostly (no debugging symbols found). So I did not copy all of it. Only the end, shortly before the crash. Tell me, if you need more information:
(no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) Qt: gdb: -nograb added to command-line options. Use the -dograb option to enforce grabbing. (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) ---Type <return> to continue, or q <return> to quit--- (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) (no debugging symbols found) [New Thread -1230931056 (LWP 3718)] [New Thread -1239323760 (LWP 3728)] [New Thread -1248855152 (LWP 3729)] [Thread -1239323760 (LWP 3728) exited] [Thread -1248855152 (LWP 3729) exited] Program received signal SIGSEGV, Segmentation fault. [Switching to Thread -1225435440 (LWP 3711)] 0x099b9ee5 in ?? () (gdb) P.S.: I could also send you a sample file and give you instructions what to do, in order to get the crash at least every second time. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.