DSXchange

can anyone please tell me what this error message mean,

main_program: Internal Error: (nP==nC): sc/sc.C: 4050
Traceback: assert.APT_FatalPath::pureAssertion(const char*,const char*,int)() at 0x90000000208b0d8
APT_SC::IPC_DataSet::computeStraightThroughOptimization()() at 0x9000000017630a4
APT_IR::Score::compose()() at 0x9000000017a6060
APT_ScoreComposer::compose(APT_Step&,APT_ErrorLog&,const APT_Config&)() at 0x9000000019180b0
APT_ScoreComposer::compose(APT_Step&,APT_ErrorLog&)() at 0x900000001917e44
APT_StepRep::check()() at 0x90000000167c09c step.APT_Step::check()() at 0x9000000016736a8
APT_OSL::createAndCheckStep(APT_OSL_SIL_StepSpec*,APT_ErrorLog&)() at 0x900000008427804 .() at 0x1000069e8
APT_PMconductorMain(int(*)(int,char**))() at 0x9000000019f0240
APT_SharedMain(int,char**,int(*)(int,char**))() at 0x9000000019eea1c .() at 0x10000ea74

Thanks
Mark

Internal errors are really difficult to diagnose, but usually indicate some sort of internal corruption in the job. I'm assuming from some of the routines that this is a runtime error (not a compile-time error), but could you confirm that?

Have you tried saving the job to another name, recompiling and seeing if that causes the problem to go away? Sometimes that will cure job corruption.

I saved the job to another name, recompiled and it ran successfully.