Thanks everyone for the comments and suggestions so far. I have not been able to reproduce it yet. The reason mostly being because I believe I accidentally dragged and dropped something. I will keep an eye out for future crashes. I will try reproducing it if I find it too.
I have been using the X2a update. The crashes have happened in that update. Luckily, my project was ok next time I opened it.
I really do not think it has to do with anything with my hardware. More specifically my audio hardware. But, I doubt it is my computer as well. The crash only affects sonar. There is no windows OS error message. The crash is specifically generated/intercepted by sonar error reporting. No windows error ever appears(like other apps I have seen).
Plus, the crash specifically happens with click and drag of Sonar components. I know the clicking and dragging was not with any third-party plugins. Whatever happened, I am quite confident it has to do with Sonar GUI. I was not using any audio recording/playback.
It is a matter of time until I find it again. It has happened approximately twice. The only reason why I am a little concerned is that it is a total crash of Sonar and I would lose anything I did not save up to that point, so it can potentially be a big deal. SO far, it has not affected me.
I will report back when it happens again and hopefully I can find out what exactly I did.
My system:
HP Envy 17 (i720 CPU, 8GB RAM, Radeon HD 5800, etc...), NI Komplete Audio 6 interface(ASIO), Windows 8(64bit), Sonar X2a(64bit).