Tooling needs to be updated for some/all of these changes introduced in SWITCHYARD-1574:

• org.switchyard.metadata.java.JavaService has been moved to org.switchyard.extensions.java.JavaService. The methods which are used to create a Java type name are still in API in org.switchyard.metadata.JavaTypes. JavaService has been moved to a new module called org.switchyard.extensions.java. This will not impact user applications, but might impact the tools build if JavaService is used behind the scenes.

• domain handlers no longer exist

• message tracing is now enabled via a system property "org.switchyard.handlers.messageTrace.enabled". Set to "true" to enable, "false" to disable. The little checkbox on the domain tab should set this property in switchyard.xml instead of adding a handler.

• other important things which I forgot

Here's the diff on core in case you want to poke around:
https://github.com/kcbabo/core/commit/c78bc571256450d1c0a80937ef7028d47519701f