Hello,

Maya is giveing me a Fatal error every time I try to render one of my scenes. I just figure out that if I am using a mia_material_X by default (without connecting anything to any of it´s fields) the scene renders with no problem, but when I use a more complex setup for any object it crashes.

this is the log I get

//=====================================================
Maya Crash Report
//=====================================================

Exception code: C0000005: ACCESS_VIOLATION - illegal read at address 0x00000000
Fault address:  3669995E in C:\Program Files\Autodesk\Maya2012\mentalray\lib\mayabase.dll
0001:0008895E Logical offset (see .map file for location)

Call stack:
(0) section:offset Address Frame
0001:0008895E 0x3669995E 0xAF4B1F90
Module:  C:\Program Files\Autodesk\Maya2012\mentalray\lib\mayabase.dll (-exported-)
Location: maya_ramp_version + 0x40E bytes
Decl: maya_ramp_version
(1) section:offset Address Frame
0001:00088FB9 0x36699FB9 0xAF4B20A0
Module:  C:\Program Files\Autodesk\Maya2012\mentalray\lib\mayabase.dll (-exported-)
Location: maya_ramp + 0x609 bytes
Decl: maya_ramp
(2) section:offset Address Frame
0001:0037D7FB 0x327EE7FB 0xAF4B2150
Module:  C:\Program Files\Autodesk\Maya2012\bin\plug-ins\Mayatomr.mll (-exported-)
Location: mi_echo_scene + 0x28AB bytes
Decl: mi_echo_scene
(3) section:offset Address Frame
0001:0037D96E 0x327EE96E 0xAF4B2190
Module:  C:\Program Files\Autodesk\Maya2012\bin\plug-ins\Mayatomr.mll (-exported-)
Location: mi_phen_eval + 0xEE bytes
Decl: mi_phen_eval
(4) section:offset Address Frame
0001:0037DA98 0x327EEA98 0xAF4B21C0
Module:  C:\Program Files\Autodesk\Maya2012\bin\plug-ins\Mayatomr.mll (-exported-)
Location: mi_phen_call + 0xA8 bytes
Decl: mi_phen_call
(5) section:offset Address Frame
0001:0002ED58 0x3663FD58 0xAF4B2360
Module:  C:\Program Files\Autodesk\Maya2012\mentalray\lib\mayabase.dll (-exported-)
Location: maya_bump2d + 0x778 bytes
Decl: maya_bump2d
(6) section:offset Address Frame
0001:0037D7FB 0x327EE7FB 0xAF4B2410
Module:  C:\Program Files\Autodesk\Maya2012\bin\plug-ins\Mayatomr.mll (-exported-)
Location: mi_echo_scene + 0x28AB bytes
Decl: mi_echo_scene
(7) section:offset Address Frame
0001:0037D96E 0x327EE96E 0xAF4B2450
Module:  C:\Program Files\Autodesk\Maya2012\bin\plug-ins\Mayatomr.mll (-exported-)
Location: mi_phen_eval + 0xEE bytes
Decl: mi_phen_eval
(8) section:offset Address Frame
0001:0000EC25 0x1F2FFC25 0xAF4B2610
Module:  C:\Program Files\Autodesk\Maya2012\mentalray\lib\architectural.dll (-exported-)
Location: mia_material_x_exit + 0x5F5 bytes
Decl: mia_material_x_exit
(9) section:offset Address Frame
0001:000166DF 0x1F3076DF 0xAF4B2810
Module:  C:\Program Files\Autodesk\Maya2012\mentalray\lib\architectural.dll (-exported-)
Location: mia_material_x_exit + 0x80AF bytes
Decl: mia_material_x_exit
(10) section:offset Address Frame
0001:000173CD 0x1F3083CD 0xAF4B29F0
Module:  C:\Program Files\Autodesk\Maya2012\mentalray\lib\architectural.dll (-exported-)
Location: mia_material_x + 0x11D bytes
Decl: mia_material_x
(11) section:offset Address Frame
0001:0037D7FB 0x327EE7FB 0xAF4B2AA0
Module:  C:\Program Files\Autodesk\Maya2012\bin\plug-ins\Mayatomr.mll (-exported-)
Location: mi_echo_scene + 0x28AB bytes
Decl: mi_echo_scene
(12) section:offset Address Frame
0001:0037D96E 0x327EE96E 0xAF4B2AE0
Module:  C:\Program Files\Autodesk\Maya2012\bin\plug-ins\Mayatomr.mll (-exported-)
Location: mi_phen_eval + 0xEE bytes
Decl: mi_phen_eval
(13) section:offset Address Frame
0001:0003E06C 0x367AF06C 0xAF4B2D40
Module:  C:\Program Files\Autodesk\Maya2012\mentalray\lib\MayaShaders.dll (-exported-)
Location: adskMayaShadingEngine + 0x70C bytes
Decl: adskMayaShadingEngine
(14) section:offset Address Frame
0001:005418BD 0x329B28BD 0xAF4B2E10
Module:  C:\Program Files\Autodesk\Maya2012\bin\plug-ins\Mayatomr.mll (-exported-)
Location: mi_call_contour_material + 0x2AD bytes
Decl: mi_call_contour_material
(15) section:offset Address Frame
0001:00541F8B 0x329B2F8B 0xAF4B2EF0
Module:  C:\Program Files\Autodesk\Maya2012\bin\plug-ins\Mayatomr.mll (-exported-)
Location: mi_call_contour_material + 0x97B bytes
Decl: mi_call_contour_material
(16) section:offset Address Frame
0001:00542383 0x329B3383 0xAF4B2F60
Module:  C:\Program Files\Autodesk\Maya2012\bin\plug-ins\Mayatomr.mll (-exported-)
Location: mi_phen_call_shader + 0xF3 bytes
Decl: mi_phen_call_shader
(17) section:offset Address Frame
0001:008F0A3A 0x32D61A3A 0xAF4B2FA0
Module:  C:\Program Files\Autodesk\Maya2012\bin\plug-ins\Mayatomr.mll (-exported-)
Location: mi_trace_refraction + 0x51A bytes
Decl: mi_trace_refraction
(18) section:offset Address Frame
0001:008EF528 0x32D60528 0xAF4B3050
Module:  C:\Program Files\Autodesk\Maya2012\bin\plug-ins\Mayatomr.mll (-exported-)
Location: mi_trace_probe_x + 0x6E8 bytes
Decl: mi_trace_probe_x
(19) section:offset Address Frame
0001:008EF76F 0x32D6076F 0xAF4B30F0
Module:  C:\Program Files\Autodesk\Maya2012\bin\plug-ins\Mayatomr.mll (-exported-)
Location: mi_trace_probe_x + 0x92F bytes
Decl: mi_trace_probe_x
(20) section:offset Address Frame
0001:008F1DB1 0x32D62DB1 0xAF4B3A90
Module:  C:\Program Files\Autodesk\Maya2012\bin\plug-ins\Mayatomr.mll (-exported-)
Location: mi_trace_refraction + 0x1891 bytes
Decl: mi_trace_refraction
(21) section:offset Address Frame
0001:008F03E4 0x32D613E4 0xAF4B3D20
Module:  C:\Program Files\Autodesk\Maya2012\bin\plug-ins\Mayatomr.mll (-exported-)
Location: mi_trace_reflection + 0x1E4 bytes
Decl: mi_trace_reflection
(22) section:offset Address Frame
0001:00010FE8 0x1F301FE8 0xAF4B3FE0
Module:  C:\Program Files\Autodesk\Maya2012\mentalray\lib\architectural.dll (-exported-)
Location: mia_material_x_exit + 0x29B8 bytes
Decl: mia_material_x_exit
(23) section:offset Address Frame
0001:00011886 0x1F302886 0xAF4B40E0
Module:  C:\Program Files\Autodesk\Maya2012\mentalray\lib\architectural.dll (-exported-)
Location: mia_material_x_exit + 0x3256 bytes
Decl: mia_material_x_exit
(24) section:offset Address Frame
0001:00011C96 0x1F302C96 0xAF4B41F0
Module:  C:\Program Files\Autodesk\Maya2012\mentalray\lib\architectural.dll (-exported-)
Location: mia_material_x_exit + 0x3666 bytes
Decl: mia_material_x_exit
(25) section:offset Address Frame
0001:00016B53 0x1F307B53 0xAF4B43F0
Module:  C:\Program Files\Autodesk\Maya2012\mentalray\lib\architectural.dll (-exported-)
Location: mia_material_x_exit + 0x8523 bytes
Decl: mia_material_x_exit
(26) section:offset Address Frame
0001:000173CD 0x1F3083CD 0xAF4B45D0
Module:  C:\Program Files\Autodesk\Maya2012\mentalray\lib\architectural.dll (-exported-)
Location: mia_material_x + 0x11D bytes
Decl: mia_material_x
(27) section:offset Address Frame
0001:0037D7FB 0x327EE7FB 0xAF4B4680
Module:  C:\Program Files\Autodesk\Maya2012\bin\plug-ins\Mayatomr.mll (-exported-)
Location: mi_echo_scene + 0x28AB bytes
Decl: mi_echo_scene
(28) section:offset Address Frame
0001:0037D96E 0x327EE96E 0xAF4B46C0
Module:  C:\Program Files\Autodesk\Maya2012\bin\plug-ins\Mayatomr.mll (-exported-)
Location: mi_phen_eval + 0xEE bytes
Decl: mi_phen_eval
End of stack

//crash file = C:\Users\Detono\AppData\Local\Temp\MayaCrashLog120229.0810.log
//version = 2011.09.26.1222
//cut = Mon 09/26/2011, 201109261222
//last tool: renderWindowSelectContextItem
//====================================================
//panel with focus: renderView
//visible panels:
// modelPanel4 renderView
//====================================================
//Memory usage:
// 2048.000 Mb Free Memory
// 2048.000 Mb Free Swap
// 2656.391 Mb Current
// 353.712 Mb POLY_DRAW_CACHE_DATA
// 608.678 Mb Arrays
// 14.438 Mb Data Blocks
// 64.790 Mb Pixel Map
// 0.135 Mb arguments
// 60.156 Mb MEL
// 4.104 Mb Transforms
// 0.369 Mb Object Arrays
// 3.500 Mb Render Cache
// 0.012 Mb File Texture Mipmaps
// 0.016 Mb POLY_DRAW_CACHE_STATIC_DATA
//====================================================

Any Ideas??

Thanks

I figure it out it was a problem with the geometry on one object in the scene