UIMA-AS 2.8.1 comes with a modified version of dd2spring.xsl which is not backwards compatible with previous versions of UIMA-AS. The problem is that bean scope=singleton is not a valid attribute in older versions of Spring framework. The documentation clearly says it is supported yet when running with older version of Spring the setting scope="singleton" causes the following exception:
Caused by: org.xml.sax.SAXParseException; lineNumber: 63; columnNumber: 28; Attribute "scope" must be declared for element type "bean".
Modify DUCC's root pom to change dd2spring.xsl supplied by UIMA-AS 2.8.1 by replacing offending attribute (scope="singleton") with an empty string.