kelheor
I'm still getting freezes, when I try to browse disk D: in media browser.

have you checked your D drive for errors ?
I know it might not solve all your issues here but typically when opening a drive causes a crash, the disk is to blame.
like I said it might not be your whole problem but it might be contributing, especially if your streaming your audio files from that disk (Disk D)

Sounds like one of the windows updates broke your ability to stream audio. Have you tried system recall? Going back to before it was broke? Then you can add the updates (a few at a time) till you find the culprit.

arlen2133
Sounds like one of the windows updates broke your ability to stream audio. Have you tried system recall? Going back to before it was broke? Then you can add the updates (a few at a time) till you find the culprit.

I don't have any recall points and I can't reinstall my OS, because I'm using it for work and it will require weeks(or even months) to return everything to the same state. And I think that Sonar can stream audio, because it works fine with sound until restart project and it also can stream audio from libraries on drive C:

chuckebaby

kelheor
I'm still getting freezes, when I try to browse disk D: in media browser.

have you checked your D drive for errors ?
I know it might not solve all your issues here but typically when opening a drive causes a crash, the disk is to blame.
like I said it might not be your whole problem but it might be contributing, especially if your streaming your audio files from that disk (Disk D)

I used chkdsk and I can see that my drive D: is fine. I also tried to copy some media files from D:\XXX\Cakewalk\Cakewalk Content\Audio Library to the drive C: and I can play it fine from C:. Sonar isn't crashes, it just freezes and starts using CPU very intensive, which means that it continue doing something in a cycle and can't exit this cycle, which is causing hangs. Maybe there is a log file for Sonar, where I can see errors?

Two things to do before going for a clean install:
1. Launch Sonar while holding CTRL key. This will (re-)personalize settings.
2. Open your project while holding SHIFT key. This will allow to disable any plugins or soft-synths, or both.

Soundwise
Two things to do before going for a clean install:
1. Launch Sonar while holding CTRL key. This will (re-)personalize settings.
2. Open your project while holding SHIFT key. This will allow to disable any plugins or soft-synths, or both.

Sorry, but I already tried it and it's not solved the problems.
I already wrote about it, but opening project in safe mode gave me only the knowledge that if I won't load "LRS track bus: GroovePlayer" plugin, then all my projects can be loaded(but without this plugin, which is not good as I think). But Sonar still hanging, when I'm trying to browse disk D: in media browser(Sonar was installed on drive D:). And I want to know what's wrong with this plugin(because it's a default plugin as I know).

It's a DXi plugin. I've had some issues with it and TTS-1 too. DXi soft-synths should be loaded first, before other VSTis. Otherwise Sonar may get crashed.

Soundwise
It's a DXi plugin. I've had some issues with it and TTS-1 too. DXi soft-synths should be loaded first, before other VSTis. Otherwise Sonar may get crashed.

And what can I do to load it first? When I'm trying to open a project, I already got a popup from Sonar, that all plugins are successfully loaded...
 

You can re-save your project with just DXi synths, re-assign other VSTis and in the future avoid adding DXis after the project has a number of VSTis added.

Soundwise
You can re-save your project with just DXi synths, re-assign other VSTis and in the future avoid adding DXis after the project has a number of VSTis added.

I didn't add any DXi synths to my projects. Looks like Sonar adds GroovePlayer dependency automatically and there is no such synth in my projects(I can't see it in synth tab).