thanks
Just found the crashlog if this helps
Crash report from iain; Houdini Master Version 11.0.469
Traceback from Sat Aug 21 19:56:13 2010
Caught signal 6
createCrashLog(UTsignalHandlerArg, char const*) (AP_Interface.C:0)
AP_Interface::coredumpHandler(UTsignalHandlerArg) (??:0)
UT_Signal::processSignal(int, siginfo*, void*) (??:0)
gsignal+0x51
abort+0x182
<unknown>
<unknown>
<unknown>
realloc+0x2d3
ev_Matrix::setCols(int) (??:0)
ev_Matrix::setValue(int, int, double) (??:0)
ev_Matrix::scan(char const*) (??:0)
castString(EV_SYMBOL*, EV_SYMBOL*, int) (evstring.C:0)
castValue(EV_SYMBOL*, EV_SYMBOL*, int) (evparse.C:0)
EV_EXPRESSION::evaluate(EV_InlineFuncReturnType, int) (??:0)
EV_EXPRESSION::evaluate(int, double&) (??:0)
ev_EvaluateFloat(EV_EXPRESSION*, int) (??:0)
CH_Expression::evaluate(int) (??:0)
CH_Channel::evaluateSegment(CH_Segment*, float, bool, int) (??:0)
CH_Channel::evaluate(float, bool, int) (??:0)
CH_Collection::evaluate(CH_Channel*, float, bool, int) (??:0)
PRM_Float::evalValue(PRM_ParmList*, double, int, int) const (??:0)
PRM_Float::getValue(PRM_ParmList*, double, float&, int, int) const (??:0)
PRM_Parm::getValue(double, double&, int, int) const (??:0)
fn_ch(EV_FUNCTION*, EV_SYMBOL*, EV_SYMBOL**, int, unsigned int&) (OP_Expression.C:0)
EV_EXPRESSION::evaluate(EV_InlineFuncReturnType, int) (??:0)
EV_EXPRESSION::evaluate(int, double&) (??:0)
ev_EvaluateFloat(EV_EXPRESSION*, int) (??:0)
CH_Expression::evaluate(int) (??:0)
CH_Channel::evaluateSegment(CH_Segment*, float, bool, int) (??:0)
CH_Channel::evaluate(float, bool, int) (??:0)
CH_Collection::evaluate(CH_Channel*, float, bool, int) (??:0)
PRM_Float::evalValue(PRM_ParmList*, double, int, int) const (??:0)
PRM_Float::getValue(PRM_ParmList*, double, float&, int, int) const (??:0)
PRM_Parm::getValue(double, float&, int, int) const (??:0)
OP_Parameters::evalFloatT(int, int, double, int) const (??:0)
OP_Node::evaluateAllParms(float) (??:0)
OP_Node::cook(OP_Context&) (??:0)
DOP_SubNet::cookMe(OP_Context&) (??:0)
OP_Node::cook(OP_Context&) (??:0)
OP_Node::internalCookInput(OP_Context&, int, OP_Node&) (??:0)
OP_Node::lockInput(unsigned int, OP_Context&) (??:0)
DOP_Switch::cookMe(OP_Context&) (??:0)
OP_Node::cook(OP_Context&) (??:0)
OP_Node::internalCookInput(OP_Context&, int, OP_Node&) (??:0)
OP_Node::lockInputs(OP_Context&) (??:0)
DOP_Node::cookMe(OP_Context&) (??:0)
OP_Node::cook(OP_Context&) (??:0)
DOP_SubNet::cookMe(OP_Context&) (??:0)
OP_Node::cook(OP_Context&) (??:0)
OP_Node::internalCookInput(OP_Context&, int, OP_Node&) (??:0)
OP_Node::lockInputs(OP_Context&) (??:0)
DOP_Node::cookMe(OP_Context&) (??:0)
OP_Node::cook(OP_Context&) (??:0)
OP_Node::internalCookInput(OP_Context&, int, OP_Node&) (??:0)
OP_Node::lockInputs(OP_Context&) (??:0)
DOP_Node::cookMe(OP_Context&) (??:0)
OP_Node::cook(OP_Context&) (??:0)
OP_Node::internalCookInput(OP_Context&, int, OP_Node&) (??:0)
OP_Node::lockInputs(OP_Context&) (??:0)
DOP_Node::cookMe(OP_Context&) (??:0)
OP_Node::cook(OP_Context&) (??:0)
OP_Node::internalCookInput(OP_Context&, int, OP_Node&) (??:0)
OP_Node::lockInputs(OP_Context&) (??:0)
DOP_Node::cookMe(OP_Context&) (??:0)
OP_Node::cook(OP_Context&) (??:0)
DOP_Engine::preSimulationStep() (??:0)
SIM_Engine::doSimulationStep(bool) (??:0)
SIM_Engine::resetSimulation() (??:0)
DOP_Engine::resetSimulation() (??:0)
SIM_Engine::setSimulationTime(SIM_Time const&, bool, bool, bool) (??:0)
DOP_Parent::setDOPTimeSubclass(SIM_Time const&) (??:0)
OBJ_DopNet::setDOPTimeSubclass(SIM_Time const&) (??:0)
DOP_Parent::setDOPTime(SIM_Time const&) (??:0)
SOP_DopImport::getDOPParent(SIM_Time&) (??:0)
SOP_DopImport::initializeObjectInfo(OP_Context&, DOP_Parent*&, SIM_ConstObjectArray&, UT_StringArray&, bool&) (??:0)
SOP_DopImport::cookMySop(OP_Context&) (??:0)
SOP_Node::cookMe(OP_Context&) (??:0)
OP_Node::cook(OP_Context&) (??:0)
SOP_Node::getCookedGeoHandle(OP_Context&, int) (??:0)
OBJ_Node::getDisplayGeometryHandle(OP_Context&, int) (??:0)
JEDI_View:
puiUpdateNodeInfo(OH_NodeInfo*) (??:0)OH_OpHandler:
puiUpdateData() (??:0)OP3D_View::doUpdate() (??:0)
JEDI_View:
puiUpdateData() (??:0)OH_OpHandler::trigger() (??:0)
UI_Queue::processNextEvent() (??:0)
UI_Queue::drain() (??:0)
UI_Queue::drainEvents(bool, bool) (??:0)
HOMFwaitForEventsToBeProcessed() (??:0)
HOMF_SceneViewer::performSelection(DM_SelectMode) (??:0)
HOMF_SceneViewer::selectObjects(char const*, int, bool, bool, bool, bool, std::vector<std::string, std::allocator<std::string> > const&, char const*, char const*) (??:0)
_wrap_SceneViewer_selectObjects (_hou2.6.C:0)
PyCFunction_Call+0x128
PyEval_EvalFrameEx+0x4724
PyEval_EvalCodeEx+0x86d
PyEval_EvalFrameEx+0x4358
PyEval_EvalCodeEx+0x86d
PyEval_EvalFrameEx+0x4358
PyEval_EvalCodeEx+0x86d
<unknown>
PyObject_Call+0x5c
PyEval_EvalFrameEx+0x3542
PyEval_EvalCodeEx+0x86d
PyEval_EvalFrameEx+0x4358
PyEval_EvalCodeEx+0x86d
PyEval_EvalCode+0x63
PY_CompiledCode::evaluateUsingDicts(PY_Result::Type, void*, void*, PY_Result&) const (??:0)
SHLF_Tool::execute(SHLF_ExecContext const&) (??:0)
OPUI_ToolHandler::handleToolEvent(UI_Event*) (??:0)
UI_Queue::processNextEvent() (??:0)
UI_Queue::drain() (??:0)
UI_Queue::drainEvents(bool, bool) (??:0)
HOMFwaitForEventsToBeProcessed() (??:0)
HOMF_SceneViewer::performSelection(DM_SelectMode) (??:0)
HOMF_SceneViewer::selectParticles(char const*, int, bool, bool, bool, bool, char const*, char const*) (??:0)
_wrap_SceneViewer_selectParticles (_hou2.6.C:0)
PyCFunction_Call+0x128
PyEval_EvalFrameEx+0x4724
PyEval_EvalCodeEx+0x86d
PyEval_EvalFrameEx+0x4358
PyEval_EvalCodeEx+0x86d
PyEval_EvalFrameEx+0x4358
PyEval_EvalCodeEx+0x86d
PyEval_EvalCode+0x63