Exception thrown at 0x0B21FEE9 in MeshSimplification.exe: 0xC0000005: Access violation reading location 0x00000000.

0b21fee9() Unknown
[Frames below may be incorrect and/or missing]
nvoglv32.dll!046929e1() Unknown
nvoglv32.dll!046a3b02() Unknown
nvoglv32.dll!046a556c() Unknown
nvoglv32.dll!0469d486() Unknown