I have seen this pop up a few times on this forum, and I'm uncertain if anyone ever fixed the problem and how (or if I need to download and reinstall Sonar X3).  Running Windows 7 64-bit... plenty of hard drive space.  Program worked yesterday!  Now I can't get it to work today... cannot play back any file (music is in its own folder) and playback gives the message UNABLE TO CREATE A NEW AUDIO FILE FOR RECORDING.

Well what exactly are you doing to play any external audio inside SONAR?

I have an ASIO device... I plug things in and play/record, but the computer also goes through that device into a mixer and speakers so I can hear what I'm playing or recording.  My input and output information has not changed.

Something is interfering with SONAR writing to the disk. It could be an anti-virus program or a problem with the drive. There may be something in the Windows Event log about the problem. If the machine has more than one drive try creating a project on a different drive.

I don't have another drive.  I'm not even trying to write to a drive, but to open a file and play it.  Been using the same anti-virus for the past three years.

Try to run Cakewalk as Administrator. Sounds like you don't have privilege to write new files into your audio folder.

Brian Johnston
Been using the same anti-virus for the past three years.

Better update it

The anti-virus is updated... my point is... it's the same company anti-virus that I've been using without issue.

It may not be the AV but just because the company has not changed you know the AV software has. If the software has a facility to exempt programs consider adding SONAR to the list.

OK... that did it!  Certain files or folders were 'protected' through the anti-virus.  What I don't get is that I wasn't trying to record, save, or anything... rather... simply play back something created previously.  Thanks for the help.