Hi DEF,
That's a pretty peculiar error that you're getting. You shouldn't have any problems by default when using that many channels with the DAQ Assistant. It makes me think that there is maybe a conflict between the size of the array of data and the number of channels that you attempting to write.
The best way to test that would be to simply look at the array size of the input array and verify that it is the same number of rows as there are channels of data to be written.
If everything appears to be in order, then there is a small possibility that it's a problem with the DAQ Assistant. One way to check that would be to use one of the example programs and try to write your data that way. You can find the examples here:
Help > Find Examples > Browse > Hardware Input and Output > DAQmx
If neither of those works, it could mean that the drivers were corrupted. If that's the case, then you'll need to download the latest version of the drivers and reinstall them.
Edit: 8.3 is now live!
NI-DAQmx Version 8.3 for Windows 2000/XPLet us know what works, or if you still can't quite get it, post your code so we can see what you're working with.
Regards,
Message Edited by Otis [DE] on 08-07-2006 02:12 PM