这是什么报错？qurtus 2

*** Fatal Error: Access Violation at 0X0000000005B16EF7
Module: quartus_map.exe
Stack Trace:
0x26EF7   : sutil_dfs_cone + 0x9B7 (SYNTH_SUTIL)
0x1903B2  : SMP_ROOT:perator= + 0x3E02 (SYNTH_OPT)
0x192529  : SMP_ROOT:perator= + 0x5F79 (SYNTH_OPT)
0x18EA24  : SMP_ROOT:perator= + 0x2474 (SYNTH_OPT)
0x358B    : RTL_ROOT::RTL_ROOT + 0x258B (SYNTH_OPT)
0x3D3F    : RTL_ROOT::process_sgate_netlist + 0x3EF (SYNTH_OPT)
0x12BD58  : SGN_HSSI_CONVERT::operator= + 0x6A8F8 (synth_sgn)
0x12C72F  : SGN_HSSI_CONVERT::operator= + 0x6B2CF (synth_sgn)
0x9B7CD   : sgn_qic_helper + 0x8F98D (synth_sgn)
0x9CD90   : sgn_qic_helper + 0x90F50 (synth_sgn)
0xB651    : sgn_full + 0xA1 (synth_sgn)

0xEFDC    : qexe_get_tcl_sub_option + 0x52C (comp_qexe)
0x1316A   : qexe_process_cmdline_arguments + 0x4CA (comp_qexe)
0x131E8   : qexe_standard_main + 0x8 (comp_qexe)
0x1A48    : msg_exe_fini + 0xF8 (CCL_MSG)
0x19EC    : msg_exe_fini + 0x9C (CCL_MSG)
0x9FC0    : operator new[] + 0x130 (ccl_mem)
0x34014   : msg_exe_main + 0x74 (CCL_MSG)
0x159CC   : BaseThreadInitThunk + 0xC (kernel32)
0x2B890   : RtlUserThreadStart + 0x20 (ntdll)

End-trace