"Unable to open audio record device" error message

You have to provide a BUNCH more information as to what is in these projects, along with more information on your system, and on the configuration settings.

1.  Windows 7 - 32-bit or 64-bit?

2.  Is your OS up to current maintenance levels?

3.  Do you have the latest drivers installed for your Quad-Capture?  Please list the one you have installed.

4.  Is your Sonar 32-bit or 64-bit?

5.  Is your Quad-Capture set to be the default audio device for Windows?

6.  What sample rate and ASIO buffer size do you have specified for your Quad-Capture?

7.  For Sonar, what driver mode are you using?  Look in Preferences>Audio>Playback and Recording

8.  For Sonar, what sample rate and bit-depth are you using?  Also in Preferences.
The sample rate in Sonar MUST match the sample rate for your Quad-Capture.

9.  Do you have your Quad-Capture plugged into a USB 3.0 port?  If so, move it to a USB 2.0 port.

10.  Have you tried loading any of these projects in Sonar's 'Safe Mode'?  If not, please do, and try to load one of these projects without enabling any of the plugins, just to see if it loads.

Please review all of the above, and respond to each and every question.

Thanks, I will try to help, 

Bob Bone

I've had that message when using the Roland UA 22. It only happens when ASIO is selected, my favourite prompt is 'can't find the UA 22, would you like to use the UA 22 instead". Then nothing appears in the audio devices until I restart the computer - (sometimes 2 or 3 restarts are required). Buffer settings etc are all good, this is not the issue
 
The problem is USB related, I've also had problems with other interfaces I've tested. Plugging in a USB hard drive seems to be the main problem for me - still need to restart a couple of times even when external drive is unplugged. 
 
It's stable at the moment but I'm still testing - 18 new computers for a school lab. I've kept the interface on USB 2 and have moved the mouse, keyboard and external hard drive to USB 3. Then I went to the device manager, USB controllers, right clicked on generic hubs and went to properties. When I found the Roland interface, I went to power management and unchecked  "Allow the computer to turn off this device".
 
I'm hoping it continues to work as I want to use ASIO not WDM, the thought of 18 teenagers all saying "mine's not working" is enough incentive for me to continue testing.
 
Good luck

Yay!

You CAN change the record bit-depth, by the way.

Preferences>File>Audio Data, then you will see a drop down arrow next to Record Bit-Depth.  You should be OK with 24.

You did not respond to my question on the Sample Rate specified in Sonar.  I did see you have the interface set to 48k.  Make sure you have Sonar set to 48k also.  To do that, go to Preferences>Audio>Driver Settings.

Bob Bone

is there something in those older projects that differ from the new ones ?
what could be different" would be my next place I would be looking.
 
could be a plug in, maybe a synth that is corrupting your older projects and losing your devise somehow.
 
another thing that may help is delting your AUD.INI file. then letting sonar rebuild a new one.
the AUD INI has all the saved settiungs of your devices, its a data file containg them.(written in notepad)
make a back up first and put it another folder (ive never needed to do that but whos to say there not a first.)

optimus


Spoke too soon.
The problem is back and disconnecting and reconnecting the Quad Capture while Sonar is open isn't the solution.

Bob, the sample rate in Sonar is the same 48000Hz. The 24 bit depth is greyed out and can't be changed.

The weird thing is, recent projects play ok. It's the old ones that don't, though they were tracked using the same computer, device, and Sonar.

The Quad Capture plays back the test file included with it without problems.

The bit-rate you are looking at is NOT the one I referred to in my instructions as to where to change it.  Please review my earlier post.  Bit rate show in one place as grayed out, but to change it you must go to Preferences>File>Audio Data.  That is not your issue with these projects, but is nonetheless how you change the bit-depth for recording in Sonar.

Why don't you try using a Sample Rate of 4.1?  Just as a test.

Bob Bone

I have gotten that message when there was a clock rate difference. 
I have a few older projects that where recorded at 48, when I open them I get that message. I had to go to my interface control panel and change the clock rate. In your case I would try this with 44.1. 

if these ideas don't help optimus you may be at the end of your rope and tech support is always another option.