Thanks Doctor Avalanche,
So, when I try to open Sonar Platinum I receive the following:
"There are no audio devices for the current driver model on your system. Please go to Edit..."
I click ok and then another message saying:
"the Master track is assigned to a silent hardware output..."
I click ok and then:
"SONARPLT.exe has stopped working
A problem caused the program to stop working correctly..."
I click close the program.
It exits and then... opens the Start page that, of course, is not working.
After this, if I try to play a soft synth standalone (Native Instruments, or Arturia) the Asio driver is not working.
When I restart, I can play the soft synths, Sonar X3e, everything... until I open Sonar Platinum and everything will happen again!
And Sonar has the September update.
Thanks,