Still need help with Guiminer error message!

[rsheldon]

2013-06-12 16:43:59: Listener for "7870" started
2013-06-12 16:44:00: Listener for "7870": Traceback (most recent call last):
2013-06-12 16:44:00: Listener for "7870": File "poclbm.py", line 85, in <module>
2013-06-12 16:44:00: Listener for "7870": File "BFLMiner.pyo", line 48, in initialize
2013-06-12 16:44:00: Listener for "7870": File "ioutil.pyo", line 34, in find_com_ports
2013-06-12 16:44:00: Listener for "7870": File "BFLMiner.pyo", line 34, in check
2013-06-12 16:44:00: Listener for "7870": File "BFLMiner.pyo", line 17, in open_device
2013-06-12 16:44:00: Listener for "7870": File "serial\serialwin32.pyo", line 31, in __init__
2013-06-12 16:44:00: Listener for "7870": File "serial\serialutil.pyo", line 261, in __init__
2013-06-12 16:44:00: Listener for "7870": File "serial\serialwin32.pyo", line 71, in open
2013-06-12 16:44:00: Listener for "7870": File "serial\serialwin32.pyo", line 186, in _reconfigurePort
2013-06-12 16:44:00: Listener for "7870": ValueError: Cannot configure port, some setting was wrong. Original message: [Error 1] Incorrect function.

Guiminer
stratum.bitcoin.cz  3333
Azuz HD Radeon 7870

Have run same configuration in other rigs and it works fine.  Haven't seen the "Traceback" message before.  Cannot figure this one out.
Any suggestions would gr greatly appreciated!

[mynameismud]

Assuming you've installed the AMD APP SDK for OpenCL support, I would try using just cgminer (http://ck.kolivas.org/apps/cgminer/). My rig actually gets a better hashrate running cgminer by itself.