Dd2Spring.convertDd2Spring() method should log exceptions at INFO level instead of CONFIG. When runtime was mis-configured, the code was failing yet there were no exceptions being logged, making debugging difficult.
Also, when exception happens in converDd2Spring() it is not being re-thrown. This causes the uima-as to continue running and trying to deploy using zero-length spring context file which results in another Exception. Modify code to re-throw Exception.