ron jackson rrnfascinatingelectronicscom setting python newly upgraded computer amd 64 x2 dual core running 32 bit xp home installed following packages python 252 python252msi pyserial pyserial22win32exe python extensions windows pywin32210win32py25exe running test program feserialpy get following error traceback recent call last file cpython25libsitepackagesfeserialpy line 166 port_numbers portlist file cpython25libsitepackagesfeserialpy line 22 portlist feseriali file cpython25libsitepackagesserialserialutilpy line 156 __init__ selfopen file cpython25libsitepackagesserialserialwin32py line 57 open win32filesetupcommselfhcomport 4096 4096 error 1 setupcomm incorrect function lines 5657 serialwin32py setup 4k buffer win32filesetupcommselfhcomport 4096 4096 works fine laptop computer set time ago slightly older version python getting error dont think pyserial changed long time recent change pywin32 change python 252 would account error something installation havent properly done thanks help ron _______________________________________________ pythonwin32 mailing list kpitckaew45pythonorg httpmailpythonorgmailmanlistinfopythonwin32 tue 05 aug 2008 211128 0800 pythonwin32 win32filesetupcomm error using pyserial new python 252 installation 32 bit xp