On second thought it's most likely related to the Control Surfaces Settings.
You can try and edit the settings or nuke the preferences.
In this case it's sometimes better to get a fresh start.
Be sure and use the tilde ~ in the path.
Do this with Logic not running.
Delete the Logic 10 preferences file AND the shared control surfaces file.
In the Finder, choose Go > Go to Folder from the menu.
Type ~/Library/Preferences in the "Go to the folder" field.
Press the Go button.
Remove the com.apple.logic10.plist file from the Preferences folder. Note that if you have programmed any custom key commands, this will reset them to the defaults. You may wish to export your custom key command as a preset before performing this step. See the Logic Pro User Manual for details on how to do this.
If you are having trouble with a control surface in Logic Pro.
then delete the com.apple.logic.pro.cs file from the preferences folder.