Sorry for the long delay.
This is a misleading error message - something to improve. But looking at the code that generates it (it is not relevantly changed in 1.3.60, btw), I can guess that you probably have it in a dev environment, when your definitions are in the calss/resource dirs rather than jars. If so - this is unfortunately a difficult place - a lot of guessing is needed.
Otherwhise, please give me more details.