Keep getting error message about opening device??

I have Audacity 2.0.3. and Mac OS x10.8.5.

HI have attached the error message I keep getting. (Not sure how to get it to show up in this window).

It tells me: ****

Error while opening sound device. Please check the input device settings and project sample rate. >

I have not used Audacity in many months and have forgotten a lot. I opened Audacity, plugged in my yeti, set the input and output to the yeti, recorded a bit, went back to listen then tried to record more. I keep getting the error message. I opened a new file with new track. What to do?

Screen Shot 2014-01-24 at 4.23.36 PM.png

You got the message the second time but not the first?!? Did you turn off or unplug the Yeti between the two tracks? Is the USB Device still listed in the Audacity recording list in the toolbar?