Symptom: Error on launch of Pro Tools: ''Pro Tools could not initialize the current playback device. Please make sure that the device has been configured correctly.''  Resolution: This could be an issue with the Current Engine setting in the Pro Tools Playback Engine. This has been resolved in some scenarios by picking a different Playback Engine:
- Launch Pro Tools
- When the splash screen appears on the screen, hold down the "n" key on your keyboard, which will eventually open the Playback Engine dialog for Pro Tools.
- At the top of this window, you will see the 'Current Engine' drop-down menu.
- Choose a different Engine (such as Pro Tools Aggregate I/O)
- Click OK.
- This should allow Pro Tools to launch.