Hi, The captioned module has been deleted. It contained 2 classes:- 1) ConstraintValueHelper - I have moved elsewhere (I don't think anyone uses it, as it's use was specific to various Drools Workbench screens). 2) Observer - I have deleted this. It was only used by 1 screen in kie-wb-common (the POM Panel in the Project Editor). It's use was flawed and hence it might as well not have been used. I've updated the POMs and gwt.xml files for the following (master branch):- guvnor kie-wb-common drools-wb kie-wb kie-drools-wb jbpm-designer jbpm-console-ng There might be some I'm unaware of. If I have missed any you can simply delete the dependency from your POM and gwt.xml files. This is part of a tidy-up before I complete the guvnor/kie-wb-common split that caused pain for Beta4. With kind regards, Mike