Hi Mark! I wanted to use in my application AO Waveform Gen.vi, but I always get the same error, 10001 by AO Group Config and 10008 AO Buffer Write, so I decided to try with the simpliest one, Generate Continuous Sinewave.vi from the examples library, and here it's where I get the 10800. I'd appreciate any help with this, I'm a student trying to finish her master, and I only have 3 weeks more. Thanks.