Device identifier is invalid

I am a complete newbie and am trying to use my brand new PCI-6601.  Measurement & Automation Explorer reports the name of the board as "Dev1" and the test panel application that uses "Dev1/ctr0" works properly.  However, when I compile and run the cntDigEvents.c example program provided with NIDAQmx, I get an error message "DAQmxBase Error: <err>Device identifier is invalid".  The device name ("chan[]") used in the example program is Dev1/ctr0 which seems to me to be correct.
Any help would be greatly appreciated!

marc,
DAQmx Base is our platform-independent driver which can be used on Windows, Linux, Mac, and PDA. If you will be developling solely for Windows, I would recommend using NI-DAQmx (no Base) as it exposes more of the functionality of your device.
Hope this helps,
Ryan Verret
Product Marketing Engineer
Signal Generators
National Instruments

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