877             if (r.GetType() == svError)  in Push()
905             if (p->GetType() == svError)  in PushTempToken()
1018         if (pStack[sp]->GetType() == svError)  in PopError()
1033         if (p->GetType() == svError)  in PopToken()
1054             case svError:  in PopDouble()
1083             case svError:  in PopString()
1165             case svError:  in PopSingleRef()
1194             case svError:  in PopSingleRef()
1249         case svError:  in PopDoubleRef()
1285             case svError:  in PopDoubleRef()
1332             case svError:  in PopDoubleRef()
1382             case svError:  in PopDoubleRef()
1470                 case svError:  in ConvertMatrixParameters()
1590             case svError:  in PopMatrix()
1940         case svError:  in GetDouble()
1976         case svError:  in GetString()
3900                 case svError:  in Interpret()
4021     if (nGlobalError && GetStackType() != svError )  in Interpret()