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From: "Levy " <levy@pssolucoes.com.br>
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Subject: Unable to create digitalio object for parallel port
Date: Sat, 26 Apr 2008 22:06:02 +0000 (UTC)
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Hi, Folks,

Why do I get the error message:

"??? Error using ==> digitalio.digitalio at 93
Error using ==> 
digitalio.digitalio>localCreateDigitalIOObject at 187
Failure to open requested data acquisition device."

after the following command sequence?

------------------------------------------------------
>> daqhwinfo

ans = 

          ToolboxName: 'Data Acquisition Toolbox'
       ToolboxVersion: '2.11 (R2007b)'
        MATLABVersion: '7.5 (R2007b)'
    InstalledAdaptors: {3x1 cell}

>> ans.InstalledAdaptors

ans = 

    'nidaq'
    'parallel'
    'winsound'

>> dio=digitalio('parallel','lpt1')
??? Error using ==> digitalio.digitalio at 93
Error using ==> 
digitalio.digitalio>localCreateDigitalIOObject at 187
Failure to open requested data acquisition device.
-----------------------------------------------------------

Another thing related: the simulink digital output block 
does not show the parallel port.

Before someone suggests: I'm an administrator user and the 
winio starts up on boot!

Thanks in advance!