Based on this article, and borne out by AMD's stock price, you may have made a mistake:
 
https://www.benzinga.com/news/17/03/9120314/bad-news-for-amd-ryzen-7-getting-negative-reviews
 
Dan
 

KPerry
Sure it's not something like USB implementation or soundcard driver?  Worth running without any soundcard and/or trying a different DAW?
 
Other DAWs seem to run: http://www.scanproaudio.info/2017/03/02/amd-ryzen-first-look-for-audio/

According to that link, they ran SONAR.

This is what happens when you give your new flagship a name that sounds very much like a dangerous toxin.
 
i.e. Ricin

Hey guys, thanks for all the feedback and suggestions.  So it does look like folks have had Sonar running on Ryzen.  Interesting that of the two systems I've tried, both crash.  I will dig deeper today, disable onboard audio, etc and see if I can figure out exactly what is going on.  In this video posted by one of you, there is a motherboard shot toward the end - I am running that exact same motherboard, so it should be working.
 
I will report back as soon as I have this figured out.

So, I've tried disabling onboard sound, etc, but still no dice.  Here's the error in event viewer:
 
Faulting application name: SONARPLT.EXE, version: 23.1.0.32, time stamp: 0x588a602f
Faulting module name: SONARPLT.EXE, version: 23.1.0.32, time stamp: 0x588a602f
Exception code: 0xc0000094
Fault offset: 0x00000000003459c6
Faulting process id: 0x1f90
Faulting application start time: 0x01d2946d86d4c784
Faulting application path: C:\Program Files\Cakewalk\SONAR Platinum\SONARPLT.EXE
Faulting module path: C:\Program Files\Cakewalk\SONAR Platinum\SONARPLT.EXE
Report Id: 0cb6c848-90ac-4c88-a2b4-78605fedb5f2
Faulting package full name:
Faulting package-relative application ID:
 
I think it might be time to escalate this through to CW Tech Support to see if they can help.
EDIT: I have now logged this with tech support, so we'll see if they can help.

Any chance some kind of antivirus or antimalware program was running when you were installing SONAR?

MarioD
According to this image from the above URL Sonar was better on CPU usage than the other two that were tested:
 
https://dl.dropboxusercontent.com/u/97281321/Sequencer-Comparison.jpg
 
Apparently Sonar did run on this system.  So I would context the manufacturer and explain your problem because if they used Sonar for testing it should work.

So according to that chart, cpu usage in Sonar is almost 8 times more efficient than in Reaper (with Cubase performing slightly worse than Sonar). This flies in the face of every other past benchmark; Reaper is known for its super-efficient coding, so what in the heck happened?
 
I'll admit, this is the first benchmark I've seen of the optimized Sonar Platinum (over X3)... If this is an accurate test, it is really impressive.

Anderton
Any chance some kind of antivirus or antimalware program was running when you were installing SONAR?

I don't have any 3rd party AV installed yet, only what Windows 10 has natively (Windows defender, I guess).  I guess I could try disabling Windows defender and install again.  I'll give it a shot.
 
In the mean time, I have sent CW tech support a minidump, so hopefully there's something in it that will point me in the right direction.
 
EDIT: I uninstalled Sonar, disabled Windows Defender, reinstalled Sonar.  Problem persists, so that wasn't it.  I'll just have to wait for the minidump analysis.

JonD

MarioD
According to this image from the above URL Sonar was better on CPU usage than the other two that were tested:
 
https://dl.dropboxusercontent.com/u/97281321/Sequencer-Comparison.jpg
 
Apparently Sonar did run on this system.  So I would context the manufacturer and explain your problem because if they used Sonar for testing it should work.

So according to that chart, cpu usage in Sonar is almost 8 times more efficient than in Reaper (with Cubase performing slightly worse than Sonar). This flies in the face of every other past benchmark; Reaper is known for its super-efficient coding, so what in the heck happened?
 
I'll admit, this is the first benchmark I've seen of the optimized Sonar Platinum (over X3)... If this is an accurate test, it is really impressive.

 If that is accurate then I bet they have a fix within a week.

Not accurate. The three DAWs were run with three completely different loads ( 8 Good Reasons demo from Cubase 8) (“These Arms” Sonar demo)