Hello -
 
Is anyone else having this issue when opening Sonar Platinum? I have check and have everything up to date in the Command Center. Sonar has been working fine for months, now suddenly when I click the icon to open Sonar I get the following error message and Sonar closes.
 
a controller/surface DLL is not installed
 
Any ideas on what to do? I have tried loading in Safe Mode and get the same error.
 

If you do not have a control surface attached, review and correct SONAR Preferences > MIDI > Control Surfaces
 
Otherwise this might be useful https://www.cakewalk.com/...rol-Surface-Installers

The link you provided says 404 Page Cannot be found?
 
I also cannot get into Sonar it crashes?

I am sorry. The URL resolves for me in FireFox. I just tested the post in another browser (Edge) too.
Search the knowledge base for "Control Surface Installers"

Scook - 
 
Strange it seems to work now, the URL, that is.
 
I downloaded the file and installed it and still getting the same results. Not sure what else to try other than uninstalling Sonar and reinstalling it? Very strange issue.
 
Thanks for link though.

May need to re-personalize SONAR. In Win10, hold the CTRL+SHIFT and right-click the SONAR icon and open. This will reset the files in the user directory and some registry settings to their defaults. If you have customized your user directory consider making a copy or backup first. The user directory is  %appdata%\Cakewalk\SONAR Platinum

Reinstall is always an option. Are you using the Command Center? If so, try a rollback and reinstall.
 

Tried what you suggested:
 
May need to re-personalize SONAR. In Win10, hold the CTRL+SHIFT and right-click the SONAR icon and open. This will reset the files in the user directory and some registry settings to their defaults. If you have customized your user directory consider making a copy or backup first. The user directory is  %appdata%\Cakewalk\SONAR Platinum
 
Still no luck :(
 
Probably going to try a roll back and reinstall tomorrow. This sucks!!! Client waiting for a file and breathing down my back at, ugh!

So, still no luck. I tried a system restore today to a date where I know Sonar was working. Tried to load Sonar and still have the same issue.
 
I then uninstalled Sonar and reinstalled it and still getting the same error.
 
I have emailed support and have not heard anything back yet. I am stuck as so what else to try?

Did you try a clean install? http://www.cakewalk.com/S...n-Install-Instructions