wgmj
I'm having the same issues, it got ridiculous Friday night, my singer would do one line and I would immediately save. It was freezing every 10 minutes. Meters would be stuck, no message about sending the crash to Cakewalk would come up. My system would let me alt ctl dlt to get to task manager where I would have to end task on Sonar. But once back to my desktop, I couldn't open Sonar, I would have to do a complete system restart, then repeat the process. Kinda stifles the creative process a bit, and it's so annoying that I'm paying monthly for it and it doesn't work. I'm at work right now, so I don't have all my info, I'm running around 18 tracks, 5 buses and a master bus. I use a Roland Octa-Capture for my interface. One thing I noticed is the Octa-Capture was running at 48000Khz instead of 44100Khz due to the fact that I use an Axe-FxII to do all the guitars and bass, and it runs at 48000Khz. So I was wondering if that could be an issue, I never even knew the Roland could run at that to be honest, unless its picking up on what my settings are in Sonar. At one point, my phantom power kicked off by itself. It was an extremely buggy night. I've never had issues with Sonar Plt until that night trying to track vocals. It has never froze or anything, but now when I go back and mix this project, the line that scrolls acrossed the screen as its playing is jerky, like its a lack of memory or something. But that can't be, I've got a beast of a computer, its a gaming system, 8 core, 2.3 GHZ, 16 mg memory, I can't remember what video card is in it, but it never has issues with anything. I do use Waves plug ins, and I think I may be mixing in a 32 bit in there with the VST3's. I will pull that VST2 32 bit and see if it helps, and check for updates on my drivers. I will also try what meh suggested once I'm home and free to mess about. Sorry about the long drawn out post, I get long winded sometimes. 
 
Wgmj

If you are running Sonar 64 bit there is no reason to be using 32 plugins especially Waves.

I just ran a video game that requires tons of cpu and video card and it ran smoothly with zero issues. I just wanted to make sure it wasn't my windows 8.1, I've had issues with it in the past. But its running like a champ, so its got to be software, or a goofy setting somewhere causing it. After dinner I will run another project to see what happens. 

I was having some noise issues with Platinum and thought I needed a "better" interface. So I bought the FocusRite Scarlett  6i6. Put my AKAI Pro EIE on CraigsList. As soon as I fired up Sonar, I had crashes, lockups...you name it, it was a musician's nightmare. I put up with it for 3 weeks. I finally went back to the AKAI interface and all the problems disappeared, even the noise I was having with the AKAI.
 
So...if you know someone who has an interface you can borrow, see if that does anything. If not, I have a red FocusRite I'll sell you real cheap. You may have better luck than I did with it.

I'm back, now I can't do anything in Sonar Platinum except listen to the song and some light editing. As soon as I record and hit stop, it crashes, if I try to delete something out of my projects file, it crashes. Been communicating with support, they're thinking it's V-Vocal causing the issues. So I safe loaded my project, and said no to anything Cronus or V-Vocal, and opened a track, hit record, and again, as soon as I hit the space bar to stop recording, crash. No report generated, nothing. I also went into my BIOS and set up the recommended settings, so now my system is running full bore 100% of the time, but still having the same issues. I got a bad feeling I'm going to have to re-install. I hate doing that because I never know if I've saved everything correctly or not, and where it will be when I'm done. 

I'm almost 50 years old, and I have no idea what hijacking a thread is? But if I'm correct, and your referring to me posting on this subject, I did it in support of the individual who started this conversation. If I remember correctly, am I'm not saying I am, but if I do I remember people saying things like, "how can we all have the same exact product and ours is fine and yours is crashing all the time". So my post was in support of the issue. I never meant to "hijack" anything, and I apologize if I've done something wrong as far as "Forum Laws" go. Like I said, I'm old, I rarely ask for help in this manner. But in the future I will start my own,...what did you call it..thread? Or better yet, maybe I'll just use the phone, something I'm used to. Again, sorry for whatever I've done to offend you, never meant any offense. Peace \,,/

Doktor Avalanche
I wonder what happened with the original poster?

The original poster has things to do... Hehehehe! Sorry for going quiet but was in the middle of an unexpected move while all this was going on.
 
Anyway, I will take a look tonight as the suggestions above and see if anything helps. Sonar X2 on the other hand is stable and no issues with the same project. This definitely looks to be a Platinum issue?
 
Take it easy on the HiJacker, I have no issue with his input on my post.

I went a year and a half and recorded an entire 12 song CD using X3 and never had a problem.  I switched to Platinum on New Year's day 2015 and my system crashes on me at least 3 or 4 times a session.  the fix is simple, go back to X3.  I think I'll stay there until they figure out how to stablize Platinum

Is it possible your audio interface could have gotten plugged into a USB 3 port, rather than USB 2?  Sometimes, audio interfaces freak out and flake out Sonar and even Windows when they aren't able to handle USB 3 for some reason.
 
Also, have you tried opening your project in Sonar's 'Safe Mode' by holding down the Shift key while opening the project that is failing?  While safe mode is launching, you will be asked whether or not you want to load each/all plugins, and I suggest for the first go round that you skip the loading of ALL plugins, to try to get just the Sonar engine itself running with the project's tracks - no effects and no soft synths.  THEN, just try a few things, but don't save it while in Safe Mode, just try some stuff out and see if it still fails.  If it stays up, then perhaps a plugin is freaking things out (many times a left over 32-bit plugin might not like running in a 64-bit Sonar).  You might consider backing up your project file first, before you try this, just in case you accidentally save it.  :)
 
And, do you by chance have any hard drives that are 'green'?  (variable spin rates) These can often really have a bad hair day in Sonar, for some reason.
 
And, are you sure your Sample Rate in Sonar matches the Sample Rate set for the audio interface?  This too can sometimes wig out Sonar.
 
Also, you might try temporarily suspending your antivirus software, or adding any Sonar paths to its exclusion list, as this too can sometimes cause issues.
 
Lastly, did you use Cakewalk Command Center to do the Platinum installation?  If not, perhaps you might want to let it handle it - first making sure you have downloaded the latest version of Command Center.  
 
Bob Bone
 

1. latency mon.
2. open sonar by holding shift key down it does something to the registry.
3. try the delete aud.ini file.
4. rollback to earlier iteration.
 
The question is why do we have to do all these things!  I've been back and forth with customer service, we have no idea why sonar out of the blue started hanging while opening.  It happens randomly.

So what I am using in Platinum, Liquid Saffire 56, Windows 7 i7 chip, 64 bit, 16G Ram and according to the specs I am on the latest versions of Saffire and Platinum.  I wanted to go to W10 but I couldn't get it to recognize the Saffire interface.
 
I get that there might be some element of user error here, but I do know that when I stop using Platinum and go back to X3 I have zero issues.  Currently I am using X3 to complete everything in the recordings and then using Platinum only for one of the new Pro Channel reverbs that I like.  As frustrating as this might be, I am grateful that I have a very reliable alternative working for me.

Glad you at least have a stable X3 you can use, until you get the Platinum issues resolved on your system.
 
There were a number of things above offered as suggestions for you to try, and I am hoping one or more of those will help you move towards resolution of the problems.  Please do give them a review and try them.
 
Bob Bone
 

This thread is ancient and most likely has nothing to do with your specific problem.   You should make a new thread with details on your problem.

dont know if U solved Ur prblem. SONAR had got wors and wors, I updated to win 10 , bought ned SSD disk followed tunigs intruction. after the Izotope and Fabfilter install Vst, its freezing, stopping etc. I find my old SONAR 8.5, x1, x2, x3 in the regsitry, should I rmove those files. I reinstalled cakewalk center, and I ask sup0port, they dont answare, .  
 
At elast theuy should set up some advice site to where we can find tuing on win 10, and cleaning. SONAR is becomming more and more a problem-system, and I also, like U, lost customers, its was so embassasing, I had to pay videoeditor guy, last time here, ha drove over 100km to come to studio, and its freeze and no solution. 
 
Pleas advice me what software I should go for. I payd sice the SONAR 6, til my lifetime supbscrioption quite an amount for this
Beta-software ! .....and as the ****s in the tech dont bother to even answare my basic question, like ; how to clean up the registry, of old SONAR files. how to install the plugins the proper way, in what folders etc. 
 
I will tell people about this. Its very colse to say this is a scam, selling something that force people into forums and frustration !

I read this site, buty after I did "clean it", I started to wonder, should I remove the .8.5, .x1,x2,x3 ? and why in the registry the folder setup for Pjoject files is under my C-drive, wehn I hvae set it up , under Preferences severa times ! under my D-drive, its a LOT of garbage aroudn, a lot of paths to  Vst folders etc.  that is still there, even after I change it . The problem is, like You say, its been there for Years., but now after people misrate, or start in win 10. SONAR should update, and dont be ONLY focused on selling plugins and other "things", they remind of, yes, wMicrosoft themsefl . they set people stay in forums , truobelshot, and do the work ! while they are focusing on the bussiness modell themself ! A lot more ofet , and often I ead posts here, telling about the freeze prblems, now sepcially after this plugin- hysteeria . 
 
Of course who dont loce the Izotope an dFbafilter,, but the scripters, and core- writers of Sonar dont fooolw up. 
 
I have read several time here, htat polple is leaving the platform, and I must say. I dont jsut leave nad shake my head. I am getting Fkc. .... furious angry with ****  Beta paltform  that is more and more for choildre making 
EDM -garbage ! and this arrogant  behaviour of tech, took 3 monts before reply "........while I get error mesages Like : " fatal error " more and more often !

ok, sorry, after  using SONAR from the days with SONAR 6, and paying all thogether over 1000 dollars in updates, etc. I am now leaving this platform. and I will NOT recomend this paltform any more. Maybe its a "problem" ewith  OneDrive, and maybe its with win 10, and update, and maybe this and that.  BUT SONAR should cope with this, and inform and update the core scripts of their platform . I am now loosing many weeks of work, and SO many files and tampltes and setups that I developped over Years !
 
I have also read that serious pridecers like Bonobo and other have left this cakewalk platform that seem to me  focusing more an more towards teenagers "making" this awaful. anti-music they call EDM .
 
Please someone, advice me what to invest, what platform to move over to ? I dont care about price. All my Izotope and Fabfilte must be compatibel and also my Play, from EastWest. I also have my mixerboard from allen Heath ; qu 32. SO I have to stay in Windows platform . 
 
any serious advice ? 
 
and thanks, and I really hope you will enjoy sitting in forums for half of the time you are using SONAR, thats seem to be a wanted policy from cakewalk .