KPerry
In which case, I think it's the setting "allow record arm during playback" (or similar - not in front of PC at the moment).

+++
Project / Record / Enable Arm Changes during Playback/Record
Especially with other 2 options unchecked and some multi-out soft synth, that generate HUGE number of temporary files.
 

I've done a full re-install of Sonar Platinum (version 23.10.0 build 14 (2017.10)).
 
Reverted to just sonar standard vsts
 
Disabled all plugs ins. 
 
reactivated any plugin and same problem.
 
My old computer runs without this problem and has pretty much the same versions of software (windows, DAW, vst etc).
 
I can live with this issue, but I am conscious that this is putting much more strain on the hard disks than it should and could result in HD failure (either SSd or platter) sooner than I would like.
 
 
Possibly the only other solution is a complete rebuild of my computer - which I really am not keen to do.
 
I just hope someone out there has experienced this issue and found the solution (without using a pick axe).
 
 
Norman
 

Normthemusician
I've done a full re-install of Sonar Platinum (version 23.10.0 build 14 (2017.10)).
 
Reverted to just sonar standard vsts
 
Disabled all plugs ins. 
 
reactivated any plugin and same problem.
 

Did you do a complete reinstall (Remove registry entries, exc) ?
https://www.cakewalk.com/Support/Knowledge-Base/2007013392/SONAR-2015-Clean-Install-Instructions
 
If not your just reinstalling Sonar. This is good for corrupt .DLL and such but not for a total reset of settings.

Normthemusician
I've done a full re-install of Sonar Platinum (version 23.10.0 build 14 (2017.10)).
 
Reverted to just sonar standard vsts
 
Disabled all plugs ins. 
 
reactivated any plugin and same problem.
 
My old computer runs without this problem and has pretty much the same versions of software (windows, DAW, vst etc).
 
I can live with this issue, but I am conscious that this is putting much more strain on the hard disks than it should and could result in HD failure (either SSd or platter) sooner than I would like.
 
 
Possibly the only other solution is a complete rebuild of my computer - which I really am not keen to do.
 
I just hope someone out there has experienced this issue and found the solution (without using a pick axe).
 
 
Norman
 

Did you check the setting Azlow and I referred to?

Looks like this problem has been resolved.


 
Thanks to everyone for their ideas and being so quick to offer some suggestions.
 

• Uninstalled Platinum again
• Uninstalled Play again
• Uninstalled
• UVI
• Cleared registry entries for Sonar and Play (interesting how following the useful link to doing a clean install didn't match everything on my system in terms of what should be there to remove)
• Reinstalled all above again
• Ensured recording bit depth set to 24, Render to 32.

At least now on opening one of the projects, the large number of 'wav' files appear, but now only 4 kB each, and they then disappear after a while.
 
Two annoying things:

• All the tracks are now linked to the wrong Play instances so they all have to be re-assigned.  A bore for many of the tracks as it took a long time to experiment with the best samples to use, but a complete pain for the choirs as I have to add back in all the voice texts.
• Until I've painstakingly gone through this, if I try to run the project, it crashes with the C0000005 error (where software is trying to access memory that doesn't exist). Particularly frustrating as there is plenty of memory spare !

 
I wonder if anyone else has found issues with Hollywood Choirs and Sonar?
I've lots of correspondence with EastWest about this latest sample set and they are still working on a fix.
I think this is a something to open in another thread.

Are you using a BRAND NEW project or working off a template of some kind??

I don't think your problem is  fully fixed as when you open a new project you should not have any wav files at all in the audio folder.   I should  be completely empty.   I would open a new project and add in the extras one by one until you find what is causing this.  Its may be tedious but its the only way
 

I have installed Sonar a dozen times over this last couple of months as I was making back up systems for the future. ( thank goodness I didn't really need them!)  I open all sorts of projects, old new, templates, midi files transfers from Cubase you name it. And never in my history with Sonar has it created an audio file unless I insert an audio track and record something.
 
Lately I've been working on over 120 Backing tracks. I decided to remove all audio from these and converted all to midi. So once the audio tracks are deleted or converted to midi  I "save as" and point to a new location and "uncheck" the save audio box. This saves a CWP file as an icon. There is no audio or other folders created. 

 
So I'm am baffled by what you are doing. It was mentioned earlier and you have ignored a few very good suggestions. Are you using a midi track or a simple instrument track? DON'T use a simple instrument track, use a midi track and point it at the VST track. In my signature is a detailed tutorial on using midi with Sonar. 
There are dozens of ways to set things up and all will work in the end. My system works for me and over 14 years I have never lost track of how things are saved and stored. See below. 68 projects, no audio 25 MB of storage used. Each song has 4 -7  VST instruments. 4 - 12 midi tracks. 
 

 
Edit- I just tried something. Took one of the files that is just a CWP file, no audio folder. 
Opened it, inserted a soft synth but as a " First synth audio"  
No audio folder was created. 
Now I insert a synth but I choose " Simple Instrument " and boom,, new audio folder now created.. But it is empty of course. So that is half the mystery solved. Possibly this VST you are using causes the audio samples to be added as well, certainly that is odd.