When importing catalina-task.xml and running the list task I get an java.lang.NoClassDefFoundError: org/apache/tomcat/util/buf/B2CConverter tomcat-coyote.jar is missing in the classpath. Solution: Add <fileset file="${catalina.home}/lib/tomcat-coyote.jar"/> to taskdef classpath in catalina-task.xml
It's like Bug 51621
Thanks for the report. This has been fixed in trunk and 7.0.x and will be included in 7.0.23 onwards.