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Error Querying Device -1

Hi there,

I am running into a snag on one of my programs I am trying to run. I am getting through about 3 or 4 trials and then get the error that reads: "Error Querying Device -1". I've never seen this before and was wondering if anyone knew what it meant. It does not give any other specifics. I am thinking it could be an issue with the button box connection or possibly the parallel port that I have connected to use for this program? However, I use the button box and parallel port connections for 3 other programs I am running and they all run fine. The only difference on this program is that I am showing videos instead of static images. Could that be the issue?

Any help would be appreciated.

Thank you,



  • Never mind! I figured out the issue. In case anyone else ever comes upon this. If you have videos and you set the sound to play make sure speakers are plugged in! Simple fix. :)

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