ATI 5770 GUIMiner / poclbm will not connect

Running MacPro G-4.1 on OSX 10.6.8 and GUIMiner/poclbm v2011-11-22 will not start mining with ATI Radeon HD 5770. No flags crashes & -v flag never connects to pool (BTCMP).

Constantly crashes on Line 2:

"Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000
Crashed Thread: 2
"

"Thread 2 Crashed:
0 libSystem.B.dylib     0x00007fff8a5b7290 strncmp + 16
1 ...pple.ATIRadeonX3000GLDriver   0x000000010bce33d8 glrCompLoadBinary + 3560
2 ...pple.ATIRadeonX3000GLDriver   0x000000010bce34db glrCompLoadBinary + 3819
3 ...pple.ATIRadeonX3000GLDriver   0x000000010bce3692 glrCompBuildProgram + 322
4 com.apple.opencl    0x00007fff81840175 clBuildProgram + 2301
5 _cl.so    0x0000000103473689 pyopencl::program::build(std::string, pyopenclboost::python::api::object) + 141
6 _cl.so    0x0000000103470e18 _object* pyopenclboost::python::detail::invoke, pyopenclboost::python::arg_from_python, pyopenclboost::python::arg_from_python >(pyopenclboost::python::detail::invoke_tag_, int const&, void (pyopencl::program::*&)(std::string, pyopenclboost::python::api::object), pyopenclboost::python::arg_from_python&, pyopenclboost::python::arg_from_python&, pyopenclboost::python::arg_from_python&) + 104
7 _cl.so    0x000000010347a9a1 pyopenclboost::python::detail::caller_arity<3u>::impl >::operator()(_object*, _object*) + 135
8 _cl.so    0x00000001034b0e73 pyopenclboost::python::objects::function::call(_object*, _object*) const + 733
9 _cl.so    0x00000001034afa20 pyopenclboost::python::objects::py_function_impl_base::~py_function_impl_base() + 358
10 _cl.so    0x00000001034bf1bc pyopenclboost::python::detail::exception_handler::operator()(pyopenclboost::function0 const&) const + 174
11 _cl.so    0x00000001034a0b42 bool pyopenclboost::_bi::list3, pyopenclboost::arg<2>, pyopenclboost::_bi::value >::operator(), pyopenclboost::_bi::list2 const&> >(pyopenclboost::_bi::type, pyopenclboost::python::detail::translate_exception&, pyopenclboost::_bi::list2 const&>&, long) + 24
12 _cl.so    0x00000001034a097b pyopenclboost::detail::function::function_obj_invoker2, pyopenclboost::_bi::list3, pyopenclboost::arg<2>, pyopenclboost::_bi::value > >, bool, pyopenclboost::python::detail::exception_handler const&, pyopenclboost::function0 const&>::invoke(pyopenclboost::detail::function::function_buffer&, pyopenclboost::python::detail::exception_handler const&, pyopenclboost::function0 const&) + 43
13 _cl.so    0x00000001034bf223 pyopenclboost::python::handle_exception_impl(pyopenclboost::function0) + 99
14 _cl.so    0x00000001034aff4f pyopenclboost::python::detail::pure_virtual_called() + 191
15 org.python.python     0x0000000102b08ec1 PyObject_Call + 97
16 org.python.python     0x0000000102ba0845 PyEval_EvalFrameEx + 18725
17 org.python.python     0x0000000102ba37d7 PyEval_EvalCodeEx + 2103
18 org.python.python     0x0000000102ba3988 PyEval_EvalCode + 360
19 org.python.python     0x0000000102ba062d PyEval_EvalFrameEx + 18189
20 org.python.python     0x0000000102ba37d7 PyEval_EvalCodeEx + 2103
21 org.python.python     0x0000000102ba3988 PyEval_EvalCode + 360
22 org.python.python     0x0000000102ba062d PyEval_EvalFrameEx + 18189
23 org.python.python     0x0000000102ba37d7 PyEval_EvalCodeEx + 2103
24 org.python.python     0x0000000102ba3988 PyEval_EvalCode + 360
25 org.python.python     0x0000000102ba062d PyEval_EvalFrameEx + 18189
26 org.python.python     0x0000000102ba37d7 PyEval_EvalCodeEx + 2103
27 org.python.python     0x0000000102ba3988 PyEval_EvalCode + 360
28 org.python.python     0x0000000102ba062d PyEval_EvalFrameEx + 18189
29 org.python.python     0x0000000102ba3913 PyEval_EvalCode + 243
30 org.python.python     0x0000000102ba062d PyEval_EvalFrameEx + 18189
31 org.python.python     0x0000000102ba37d7 PyEval_EvalCodeEx + 2103
32 org.python.python     0x0000000102b3144b PyClassMethod_New + 1547
33 org.python.python     0x0000000102b08ec1 PyObject_Call + 97
34 org.python.python     0x0000000102ba0eea PyEval_EvalFrameEx + 20426
35 org.python.python     0x0000000102ba3913 PyEval_EvalCode + 243
36 org.python.python     0x0000000102ba062d PyEval_EvalFrameEx + 18189
37 org.python.python     0x0000000102ba3913 PyEval_EvalCode + 243
38 org.python.python     0x0000000102ba062d PyEval_EvalFrameEx + 18189
39 org.python.python     0x0000000102ba37d7 PyEval_EvalCodeEx + 2103
40 org.python.python     0x0000000102b3144b PyClassMethod_New + 1547
41 org.python.python     0x0000000102b08ec1 PyObject_Call + 97
42 org.python.python     0x0000000102b1ac47 PyInstance_New + 16535
43 org.python.python     0x0000000102b08ec1 PyObject_Call + 97
44 org.python.python     0x0000000102b9b324 PyEval_CallObjectWithKeywords + 180
45 org.python.python     0x0000000102bd8042 initthread + 2754
46 libSystem.B.dylib     0x00007fff8a5edfd6 _pthread_start + 331
47 libSystem.B.dylib     0x00007fff8a5ede89 thread_start + 13"

I suspect since this is an older OSX Machine & maybe mismatched GPU that maybe I'm missing a driver or firmware update for the ATI 5770. Getting about 50Mh/s with ganged GeForce cards on seperate machines (prob losing $$$) but the ATI 5770 would triple capacity. Still "dry-panning at Carbon Creek" but its something. Any help greatly appreciated!

Of particular note in Thread 2 - "1 ...pple.ATIRadeonX3000GLDriver   0x000000010bce33d8 glrCompLoadBinary + 3560" Maybe wrong driver?

Thanks in advance for any replies!!

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