internal error in asm module(quartus 11.1 sp2 /13.0/14.0)

[Altera_Forum]

Hi there, 

Recently I suffered a lot from quartus II internal errors.  The error always happened in ASM module. I have tried  delelted db/incremental_db directories but it did not help. I have tried different version quartus and it always happens. Sometimes it disappears if I change fitter option, however it reports error after I make several times compilation.  Below is the error reports in quartus 14.0, hope someone  have a solution. Thanks a lot!  os win7 x64 sp1, 8gb ddr3 memory,also in os win8.1 8gb ddr3 memory,ep2agx45 (also in ep2agx65)problem details Error: Internal Error: Sub-system: ASM, File: /quartus/comp/asm/asm_lab.cpp, Line: 2919 num_matches == 1 Stack Trace:              0x1d358d: set_and_get_asm_qasm_accessor + 0x1c6d   0x1d7023: asm_process_sof + 0x943   0x1db033: asm_dump_re_network + 0x1873   0x1db7cc: asm_assemble + 0x3cc   0x57b2: QASM_ACCESSOR_PROXY::operator= + 0x41e2   0x10e14: qexe_get_command_line + 0x1874   0x135d9: qexe_process_cmdline_arguments + 0x599   0x136f1: qexe_standard_main + 0xa1   0x4f98: QASM_ACCESSOR_PROXY::operator= + 0x39c8   0x9678: msg_exe_fini + 0x58   0x978c: msg_exe_fini + 0x16c   0x12c4: MEM_INITIALIZER::~MEM_INITIALIZER + 0x184   0xabe9: msg_exe_main + 0x99   0x85ed: QASM_ACCESSOR_PROXY::~QASM_ACCESSOR_PROXY + 0x16ad   0x1652c: BaseThreadInitThunk + 0xc   0x2c520: RtlUserThreadStart + 0x20    End-trace   Executable: quartus_asm Comment: None  system information Platform: windows64 OS name: Windows 7 OS version: 6.1  quartus ii information Address bits: 64 Version: 14.0.0 Build: 200 Edition: Full Version