Business-Central has not been initialized correctly after deployment on WebSphere AS.

(BPM) Business-Central deployed & started on WebSphere AS without any error in server log show error dialog right after logging in (see attached screenshots). When I navigate to Authoring -> Administration, File explorer is missing completely and any attempt to create a new organizational unit ends up with the same error dialog that welcomed me after logging in.

Although niogit location has been specified via system property "org.uberfire.nio.git.dir", there is no sign of niogit, neither anywhere in WAS home.
Another problem is the fact that no DB schema update happened (tested with DB2-97 datasource).

Please note that the original deployable binaries has been changed by removing jboss-jaxrs-api_1.1_spec-1.0.1.Final-redhat-2.jar as a workaround for bug 1088249