Thanks for the continual advice and help.
 
abacab: I tried your suggestions in the order you gave them, but got the same result - no SonarPlt - thanks anyway, I thought we were on the right track.
 
Theodocal: I agree with you that the driver settings or driver-type are the likely culprit - but I don't know how to change them without being able to open SonarPlt.
 
ChuckJones: I spent much of yesterday working with win system file checker to track down and fix user.dll problems with no change.
 
I have Malwarebytes running along with Win Defender and Super Antispyware. Malwarebytes runs every night as does Super Aantispyware. I uninstalled ASIO4all sometime ago, although I still have other ASIO driver onboard. Yesterday I finally uninstalled SonarPlt and reinstalled with all virus software disabled, but keep getting the same message. I opened my copy of Sonar Producer (X64) without a problem, other than the VST scan finding programs for SonarPlt that it could not load. I played the Sonar demo to see if it worked and it did.
 
So that's where things stand. SonarPlt no worky...so much for lifetime updates... I wonder if Reaper might be a better alternative? Anyone use PreSonus Studio?
 
Thanks again for your help - this is an excellent Forum
 
 
 

booksmusic
Thanks for the continual advice and help.
 
abacab: I tried your suggestions in the order you gave them, but got the same result - no SonarPlt - thanks anyway, I thought we were on the right track.
 
Theodocal: I agree with you that the driver settings or driver-type are the likely culprit - but I don't know how to change them without being able to open SonarPlt.
 
ChuckJones: I spent much of yesterday working with win system file checker to track down and fix user.dll problems with no change.
 
I have Malwarebytes running along with Win Defender and Super Antispyware. Malwarebytes runs every night as does Super Aantispyware. I uninstalled ASIO4all sometime ago, although I still have other ASIO driver onboard. Yesterday I finally uninstalled SonarPlt and reinstalled with all virus software disabled, but keep getting the same message. I opened my copy of Sonar Producer (X64) without a problem, other than the VST scan finding programs for SonarPlt that it could not load. I played the Sonar demo to see if it worked and it did.
 
So that's where things stand. SonarPlt no worky...so much for lifetime updates... I wonder if Reaper might be a better alternative? Anyone use PreSonus Studio?
 
Thanks again for your help - this is an excellent Forum
 
 
 

Wow! Sorry for your troubles, booksmusic, you have been a trooper for your efforts through all the troubleshooting suggestions shared by this group!  I had really hoped we were on to something!
 
So this is probably not what you wish to hear at this point, but I'm going say that Platinum is working for many folks.  I cannot understand why it is not working on your computer configuration.  Based on your system specs, it should run, and with a decent audio interface it should perform very well.  It apparently did run originally.
 
Here is a tutorial you may wish to try.  It is up to you.  Make sure to backup your files before attempting any of this.
 
http://www.tenforums.com/...eset-windows-10-a.html
 
EDIT: The only reason I made the last suggestion is that you have previously indicated that a recent System Restore point is  unavailable.  That would have been my first choice.  It is possible that your files and folders are OK, but maybe a small chance something in your registry needs fixed.  Question ... did you try with System Restore "Choose a different restore point, then check the box "show more restore points?  Or is the protection setting for your C: drive set to completely off?
 

booksmusic
 
To promidi: I wish MS had told me that I needed to turn on SystemRestore when I upgraded from WIN7 in June, but they didn't, so I'm not able to restore to a time before this event happened; but thanks for the advice anyway.

Here's an update: Mike Lally at Cakewalk Product Support Services sent me an email on Aug. 18th. I responded to his email and sent him a file with the file from the Win Event Viewer when the first Sonar crash occurred (Aug.6th). Still haven't heard back from Mike or anyone else. In four days it will be a month since this happened. Needless to say, I've stopped holding my breath.
 
Reynold

Are you still getting this msg when you launch Platinum?
 
 ... a box is displayed for a moment on the lower right of my screen with this info: "ASIO4All.v2-SONAR.PLT 512 Samples 44.1mhz"
 
The reason I'm asking this question is that I have been testing Platinum on my non-DAW laptop with ASIO4ALL as my audio output.
 
It works great and i only see that message box you describe if I hover my mouse over the ASIO4ALL icon on the Windows 10 task bar.

Hi abacab:
No I don't get that message. I uninstalled ASIO4all; it's still "SONARPlt.exe has stopped working." I still have copies of ASIOmulti and FenderASIO on my hard drive, and "FenderASIO -SONAR.PLT 512 Samples 44.1mhz" came up once after I uninstalled ASIO4all. I thought of uninstalling both of those as well, but I don't see why that would make a difference. Maybe someone could explain it to me?
Reynold

Sorry if I missed this in the earlier replies, but when you reboot sonar with the ctrl key down, can you get far enough to choose a non-asio driver (mme or wdm/ks)?  That's what I would do.  Sorry again if this has been tried.  And why (again?) are you using asio4all instead of the creative asio driver?!  (you can still get legacy asio drivers from creative.com)
 
PCI:  http://support.creative.com/Products/ProductDetails.aspx?catID=1&subCatID=208&prodID=15855&prodName=Sound%20Blaster%20X-Fi%20Xtreme%20Audio&subCatName=X-Fi%20Series&CatName=Sound+Blaster&VARSET=prodfaq:PRODFAQ_15855,VARSET=CategoryID:1
 
PCIe:http://support.creative.c...70,VARSET=CategoryID:1

booksmusic
Hi abacab:
No I don't get that message. I uninstalled ASIO4all; it's still "SONARPlt.exe has stopped working." I still have copies of ASIOmulti and FenderASIO on my hard drive, and "FenderASIO -SONAR.PLT 512 Samples 44.1mhz" came up once after I uninstalled ASIO4all. I thought of uninstalling both of those as well, but I don't see why that would make a difference. Maybe someone could explain it to me?
Reynold

 
Edit: I have been testing the ASIO4ALL driver on my non-DAW laptop to see if I could use it for audio output from Sonar Platinum x64 2016-07.  My laptop is a stock Acer E-15 with Realtek audio, with only the original OEM drivers and no other DAW software or audio interfaces. Running Windows 10 Home x64.  Seems to perform OK with Platinum at low latency using VST synths.  In an effort to assist the OP, the following describes my attempt to pull ASIO4ALL out from under Sonar Platinum and observe how it behaves normally in this situation.  I had no trouble re-starting Sonar and re-configuring the audio options.  

OK, I just uninstalled ASIO4ALL from Win10 Programs and Features in Control Panel.
 
Then when I launched Platinum normally I got this dialogue from Platinum (a rectangular pop-up with a yellow triangle inside):
"There are no audio devices for the current driver model on your system. <reference to ASIO in Sonar settings>
Please go to Edit | Preferences | Audio | Playback and Recording
and choose a different driver model."
 
So I click OK and at that point Sonar launches and the VST scan starts.
 
I click to open my most recent project ... and get a "Silent Busses Detected" dialogue.  In other words "Master" is not routed to anything now.
 
I click OK on that and my project opens normally.  Except no sound output now.
 
Now I go to Edit | Preferences | Audio | Playback and Recording and choose a different driver model."  so I pick WDM.
 
Then I still need to reassign "Master" to my on-board sound system.
 
Platinum runs, but now sounds like crap [expected]
 
So I have shown you the normal errors that Platinum should throw if you remove ASIO4ALL.
 
For some reason, it looks like something ASIO related is stuck in your system and Sonar is attempting to load it, but it may be corrupted.  If I was you, I would remove EVERYTHING related to ASIO on your PC, until Sonar throws a "clean" error just like I described above.
 
And just for good measure, I ran CCleaner's registry scan (no, I don't clean my Win 10 registry with any programs other than regedit) to see if any fragments of ASIO4ALL remained in the registry.  All good except for a broken application link to the uninstaller.
 
However the good news is there is now an obsolete software key listed as HKLM\Software\ASIO.  Great, I assume this means Windows no longer has any knowledge of ASIO.  So now I get the nice clean error from Sonar, that I can fix.  Fascinating

abacab

booksmusic
Hi abacab:
No I don't get that message. I uninstalled ASIO4all; it's still "SONARPlt.exe has stopped working." I still have copies of ASIOmulti and FenderASIO on my hard drive, and "FenderASIO -SONAR.PLT 512 Samples 44.1mhz" came up once after I uninstalled ASIO4all. I thought of uninstalling both of those as well, but I don't see why that would make a difference. Maybe someone could explain it to me?
Reynold

OK, I just uninstalled ASIO4ALL from Win10 Programs and Features in Control Panel.
 
Then when I launched Platinum normally I got this dialogue from Platinum (a rectangular pop-up with a yellow triangle inside):
"There are no audio devices for the current driver model on your system.
Please go to Edit | Preferences | Audio | Playback and Recording
and choose a different driver model."
 
So I click OK and at that point Sonar launches and the VST scan starts.
 
I click to open my most recent project ... and get a "Silent Busses Detected" dialogue.  In other words "Master" is not routed to anything now.
 
I click OK on that and my project opens normally.  Except no sound output now.
 
Now I go to Edit | Preferences | Audio | Playback and Recording and choose a different driver model."  so I pick WDM.
 
Then I still need to reassign "Master" to my on-board sound system.
 
Platinum runs, but now sounds like crap
 
So I have shown you the normal errors that Platinum should throw if you remove ASIO4ALL.
 
For some reason, it looks like something ASIO related is stuck in your system and Sonar is attempting to load it, but it may be corrupted.  If I was you, I would remove EVERYTHING related to ASIO on your PC, until Sonar throws a "clean" error just like I described above.
 
 

WDM/KS sometimes works really well, sometimes not, depending on the interface.  Asio4all is even more of a crapshoot.  If you're in the states...go on Craigslist and spend the $50 or so on an a focusrite or presonus interface.  :D:D

Sorry to say this again but...
I have 3 daws and all but Sonar work fine with Windows 10. I always get the same error as the OP.
Since I value Sonar much more than Win 10, I went back to Win 7. Problem solved, all 3 daws work perfectly again.
 

eph221
WDM/KS sometimes works really well, sometimes not, depending on the interface.  Asio4all is even more of a crapshoot.  If you're in the states...go on Craigslist and spend the $50 or so on an a focusrite or presonus interface.  :D:D

Good suggestion, but not gonna spend $50 for something I don't need.  ASIO4ALL works very well on my laptop, 6.9msec latency at 128 samples (softsynth output only, no external audio inputs).  I have a Firewire interface on my desktop DAW for the real stuff. WDM/KS and Wasapi also work, but ASIO works best there.  My laptop is just something I setup to play with while traveling.
 
All I was doing here was attempting to walk through the OP's situation by uninstalling ASIO4ALL from my laptop and seeing how Platinum behaved.
 
ASIO4ALL is back on my laptop and working great again now, no end of the world, LOL
 
And no, I would not recommend it for DAW use!!!  You should read this months Cakewalk eZine.  They have discovered that ASIO4ALL is now the #1 audio output used by total number of Sonar sessions launched. 
 
The OP seems to have some conflict going on due to several interfaces he had installed.  He has no restore point to back out to.  The real problem with ASIO4ALL, is that it can cause configuration issues on your PC if you are not careful.  It seems to be OK if you install it on a stock system with no other drivers than what the manufacturer put on there (or at least in my case, with Realtek on an Acer Aspire E-15).  So I guess the term "crapshoot" does apply.  Do you feel lucky???