Hi, from time to time I get the crash below. Would a simple NULL check in a_Chain_check() be the correct fix? Cheers, Johannes nated with signal 11, Segmentation fault. #0 0x0805d359 in a_Chain_check (FuncStr=0x81135b3 "a_Capi_ccc", Op=2, Branch=1, Dir=2, Info=0x0) at chain.c:192 192 if (Info->Flags & (CCC_Ended + CCC_Aborted)) { (gdb) p Info $1 = (ChainLink *) 0x0 (gdb) bt #0 0x0805d359 in a_Chain_check (FuncStr=0x81135b3 "a_Capi_ccc", Op=2, Branch=1, Dir=2, Info=0x0) at chain.c:192 #1 0x08062f03 in a_Capi_ccc (Op=2, Branch=1, Dir=2, Info=0x0, Data1=0x28c83670, Data2=0x0) at capi.c:622 #2 0x0806372f in a_Capi_dpi_send_data (url=0x0, bw=0x2871da20, data=0x29563748 "<cmd='answer' to_cmd='dialog' msg='1' '>", data_sz=40, server=0x2940ee70 "proto.https", flags=<optimized out>) at capi.c:576 #3 0x0806381a in a_Capi_dpi_send_cmd (url=0x0, bw=0x2871da20, cmd=0x29563748 "<cmd='answer' to_cmd='dialog' msg='1' '>", server=0x2940ee70 "proto.https", flags=0) at capi.c:593 #4 0x08085bed in Dpiapi_dialog_answer_cb (answer=<optimized out>, bw=<optimized out>) at dpiapi.c:43 #5 a_Dpiapi_dialog (bw=0x2871da20, server=0x2940ee70 "proto.https", dpip_tag=0x286612d0 "<cmd='dialog' title='Dillo HTTPS: Missing issuer certificate!' msg='Unable to get local issuer certificate. The issuer certificate of an untrusted certificate cannot be found.' alt1='Continue' alt2='C"...) at dpiapi.c:74 #6 0x0805d21f in a_Chain_fcb (Op=684209776, Info=0x2878cec0, Data1=0x286612d0, Data2=0x29ecb9d0) at chain.c:114 #7 0x0808b533 in Dpi_parse_token (conn=<optimized out>) at dpi.c:228 #8 Dpi_process_dbuf (conn=<optimized out>, Data1=<optimized out>, Op=<optimized out>) at dpi.c:326 #9 a_Dpi_ccc (Op=2, Branch=2, Dir=1, Info=0x2878cec0, Data1=0x29e55470, Data2=0x0) at dpi.c:713 #10 0x0805d21f in a_Chain_fcb (Op=684209776, Info=0x28788fc0, Data1=0x29e55470, Data2=0x0) at chain.c:114 #11 0x0808ba6e in a_IO_ccc (Op=2, Branch=2, Dir=1, Info=0x28788fc0, Data1=0x292f6d40, Data2=0x0) at IO.c:425 #12 0x0808bc80 in IO_read (io=0x292f6d40) at IO.c:194 #13 0x0808bd88 in IO_callback (io=0x0) at IO.c:259 #14 0x0808be47 in IO_fd_read_cb (fd=6, data=0x6d7) at IO.c:280 #15 0x080e7d15 in fl_wait(double) () #16 0x080c36fc in Fl::wait(double) () #17 0x080c377b in Fl::run() () #18 0x0804e1f1 in main (argc=1, argv=0xbfbff8c4) at dillo.cc:502 (gdb)