Hi fellow Sonar...ians :)
I just installed the latest Platinum update and it &^)*ed up my system.  My audio engine no longer turns on and on a few projects I had already saved, where it starts, my plugins don't respond to any MIDI data. 
Why am I convinced that it's a Platinum issue I hear you ask?  Well, because on the same system I also run X2 and X3 and those are absolutely fine. 
I just opened a Platinum project file with X3 (thanks Cakewalk for not blocking such functionality btw), and the project runs OK with everything in order. 
Does anyone have similar issues?
Also, while I have you here, since the penultimate update on Platinum, even though all my peak levels are in the green, I have EVERY plugin distorting as if the levels are too high.  Turning the levels down fixes it, but I'm pretty much having to run at -21db to get a workable sound. 
Any thoughts would be much appreciated. 
Thanks

have you tried rescanning your plug ins in VST settings ?

Sounds like you also need to re-profile your audio device

HAHAHAHAHA  
OMG!!!!  
OK, I realize that this is possibly reputational suicide but since you've been so kind to help, I'll share what stupid a$$ thing I've done.  I'll repay you with laughter I guess.
Not to look for excuses but I have been locked in my studio for the last 20 hours....so.....be kind
At some point in the night when adding a soft synth I must have accidentally clicked on the "MIDI Source" check-box of the "Insert Soft Synth Options" window (instead of the usual "Simple Instrument Track").
So no wonder I had no frigging audio.  

Thanks anyway guys

Please edit the original post and add [Solved] to the subject line

MassimoNicolosi
OK, I realize that this is possibly reputational suicide...

Quite the opposite, given that everyone here has experienced pilot error at some point. Circling back and explaining the issue is a sure way to boost your reputation.
 
I'm glad you got it figured out, but for reputational suicide, the correct approach is:
 
1. Post a thread title like "SONAR BROKEN!!!!!!!!! RECORDING DOESN'T WORK!!!!"
2. In your first post, talk about how much SONAR sucks, that [name another DAW; Reaper is a popular choice] always works perfectly all the time, how all the engineers at Cakewalk are stupid, and the quality control people should all be fired. Optional: Say that you have 20 years of experience as a software engineer, and if you were running the show, this kind of thing would never happen.
3. Someone posts "Do you have punching enabled further down the timeline, where you can't see it?"
4. Disable punch-in, continue recording, and never come back to the thread because you can't possibly ever admit making a mistake.
 
So please, if you do want to commit reputational suicide in the future, please follow these guidelines. They have been honed over the years in many forums, and have been proven to be effective 
 
 

Craig cracks me up!

That's helpful Craig.  I'll make a note of that one...LOL
Too funny... he cracks me up...

HAHAHAHA, thanks Craig, now I'm glad I made a mistake last night. 
That's by far the funniest thing I've read in some time.
 

MassimoNicolosi
HAHAHAHA, thanks Craig, now I'm glad I made a mistake last night. 
That's by far the funniest thing I've read in some time.

 
Well then here's something else for you......I think you'll like The Five Stages of Software Updating.