Hi,

When I'm rendering an EXR sequence in Mantra it renders about 4 frames then I get an error message ‘Error writing data to image device’. (Full message below)

Rendering to mPlay then saving works fine.

It's not something I've had before, I've generally rendered fine. I haven't changed up OS or Houdini version.

Thanks,
Simon



Simons-Mac-Pro:~ Simon$ hindie
Simons-Mac-Pro:~ Simon$ mantra: Error writing data to image device
mantra(809,0x7fffe07f83c0) malloc: *** error for object 0x7f93273e6210: incorrect checksum for freed object - object was probably modified after being freed.
*** set a breakpoint in malloc_error_break to debug
822: Fatal error: Segmentation fault (sent by pid 0)
– TRACEBACK BEGIN –
2 libHoudiniUT.dylib 0x000000010e5e2964 stackTrace() + 244
3 libHoudiniUT.dylib 0x000000010e5e25fc signalCallback(UTsignalHandlerArg) + 492
4 libHoudiniUT.dylib 0x000000010e8d8a30 UT_Signal::processSignal(int, __siginfo*, void*) + 176
5 libsystem_platform.dylib 0x00007fffd7aa0b3a _sigtramp + 26
6 ??? 0x0000000119233fb0 0x0 + 4716707760
7 libHoudiniUT.dylib 0x000000010ef3f394 VEX_Assemble::clear() + 132
8 libHoudiniUT.dylib 0x000000010ef65c29 VEX_Context::clearFunctions() + 73
9 libHoudiniUT.dylib 0x000000010ef661bd VEX_Context::clear() + 45
10 libHoudiniUT.dylib 0x000000010ef72c2e VEX_ContextManager::clearContext(VEX_ContextType) + 174
11 libHoudiniRAY.dylib 0x000000011880c30c RAY_Scene::shutdown() + 76
12 libHoudiniRAY.dylib 0x000000011882c71b RAY_SceneIO::doQuit(CMD_Args&) + 251
13 libHoudiniPRM.dylib 0x0000000110fca812 CMD_Manager::runCommand(char*) + 4146
14 libHoudiniPRM.dylib 0x0000000110fb678e CMD_Manager::internalExecute(char const*) + 3534
15 libHoudiniPRM.dylib 0x0000000110fc7c8c CMD_Manager::processInput(CMD_Source*, char const*) + 140
16 libHoudiniPRM.dylib 0x0000000110fc860f CMD_Manager::internalSendInput(char const*, bool) + 1535
17 libHoudiniPRM.dylib 0x0000000110fc8d04 CMD_Manager::sendInputNoLock(char const*, bool) + 68
18 libHoudiniRAY.dylib 0x0000000118825a78 RAY_Scene::load(UT_IStream&) + 472
19 mantra 0x000000010c52fe56 main + 2694
20 libdyld.dylib 0x00007fffd7891235 start + 1
21 ??? 0x0000000000000001 0x0 + 1
– TRACEBACK END –
Simons-Mac-Pro:~ Simon$

I think I've found why, not entirely sure but it works now. Just posting in case anyone has the same problem.

I had some extra image planes exporting data, I messed up my naming a little. Now it's corrected it all functions ok.