http://www.sonarmods.com/sonarmods/forum/index.php/topic,706.msg3659.html#msg3659

 "Undo function after applying Melodyne to an audio clip crashed Sonar. I could not repro this, though."
Do you remember if you undid quickly before melodyne finished its analysis? There is a bug in Melodyne where it doesn't like to be released before analysis is complete in some rare cases which has been reported to their development.
Anyway if you run into this please send a bug report with a crash dump file so that we can forward this info.

> Do you remember if you undid quickly before melodyne finished its analysis
 
Well, it depends on how much is quick... 3-5 seconds max, maybe quicker.  I didn't find crash dump file but I'll report if I can reproduce this!
 
Thanks for your attention. You have made great piece of software this year!

My day 2 impressions here - 9 hours work with Sonar.
X3 rocks! :)
 

panup
My day 2 impressions here - 9 hours work with Sonar.
X3 rocks! :)
 

Awesome report man.  Thanks for the feedback.  I hope to download soon.

Thanks for your time to report! I cant wait to get X-3!

With regards to this point: "Audio engine is smoother, however, not gapless - for example, engaging PDC will pause playback for 1-2 seconds."
 
Maybe I'm misunderstanding how PDC works, but how would it be possible to engage it without there being some kind of pause? 

1-2 seconds is a long time compared to buffer sizes etc. I wish PDC could be switched in fraction of a second but obviously there are technical limitations I'm not aware of.

Its pretty hard to switch in and out of PDC without some delay. Depending on the size of your project its normal for it to take a couple of seconds since it has to preroll the entire sequence again to delay compensate all the tracks.
 
>>It caused Waves CLA plug-ins to lose their settings.
I just located the cause of this. We'll fix it soon

>>It caused Waves CLA plug-ins to lose their settings.
> I just located the cause of this. We'll fix it soon
 
Thanks! :)