Hello,
 
My audiobox just wont record.  Sonar does regonize the device and all the settings are correct as the cakewalk hardware setup said. 
Still when I click on the record button I get the error "Unable to open audio record device. Device may not support the current project's audio format or may be in use". The audiobox also works fine on my PC as a soundcard. And sound is comming out of my speakers. Strange thing also is that I can record a midi track, just no audio track.

I hope someone can tell me whats wrong!
Thanks!

P.S
Sorry for my bad English.  

Please install Sonar X1D patch.
 
Then install the latest drivers (1.3):
http://www.presonus.com/products/AudioBox-USB/downloads
 
Make sure you are using the ASIO driver in Sonar preferences, you may also want to look at the bit depth and sampling rate as well. Please make sure all other applications are closed whilst you are using Sonar.
 
Cheers...

Hey,
 
Thank you so much!
It all works now :)

THANKS :D