I'm seeing an issue regarding Pm_Initialize failing on Mac OSX on x64 
architecture.  I have a MIDI USB device powered on and I can send it data 
successfully, but if I don't send it data for a few minutes (5 or so), when I 
try to send it data again the Pm_Initialize call fails in MIDICreateClient.  I 
get a return code of -50 (paramErr).  I issue Pm_Terminate every time and it 
initially works when I start my application.  The call to Pm_Initialize seems 
to 
fail only if I wait and don't send any data for a few minutes.  This same code 
works fine on Windows.  Is this a configuration issue on Mac, or a coding 
issue? 
 
Help, pointers, etc. are appreciated. 
 
Dan
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