Memory Access violation

Hi All,

I am trying to get my code o compile, which it has been doing fine all morning, but now I am consistently getting stack failures as detailed below. Can anyone help me understand what these errors mean and how to fix/avoid them?

*** Fatal Error: Access Violation at 0X000007FAE5D72D21

Module: quartus_map.exe

Stack Trace:

0x2d20: PDB_SEMAPHORE::create + 0x1190

0x34121: CDB_SGATE_COMP_PORT_ENTRY::operator<< + 0x91

0x529b: pdb_write_ptr + 0xfb

0x1075c3: sgn_clear_check_ip_functor + 0x6a953

0x1152a0: sgn_clear_check_ip_functor + 0x78630

0x9f64d: sgn_clear_check_ip_functor + 0x29dd

0xae656: sgn_clear_check_ip_functor + 0x119e6

0xb9dda: sgn_clear_check_ip_functor + 0x1d16a

0xba15b: sgn_clear_check_ip_functor + 0x1d4eb

0x10de2: sgn_qic_full + 0x152

0x128ed: qexe_get_command_line + 0x206d

0x1573e: qexe_process_cmdline_arguments + 0x59e

0x15851: qexe_standard_main + 0xa1

0xa7f8: msg_exe_fini + 0x58

0xaf3c: msg_exe_fini + 0x79c

0x1f14: MEM_SEGMENT_INTERNAL::~MEM_SEGMENT_INTERNAL + 0x194

0xb8bf: msg_exe_main + 0x8f

0x1841: BaseThreadInitThunk + 0x19

0x3f9d0: RtlUserThreadStart + 0x20

End-trace

Quartus II 64-Bit Version 13.1.0 Build 162 10/23/2013 SJ Full Version