Where did you add the kext?
If you had added to /L/E, did you repair permissions and rebuild cache?
How did you add the layout-id? with what app?
Perhaps you had corrupted the Config file if you're using a text editor instead of using Clover Configurator, Xcode or Plist edit Pro.
At clover, add boot arg to determine the boot issue
-v debug=0x100
Post your Clover folder if you want us to help you determine the issue