Do you know the version of your Eclipse the Rational developer used? In the log, it says "requires org.eclipse.equinox.p2.ui.discovery 1.0.0' but it could not be found", which means the problem maybe in Eclipse.
Worklight 6.1 requires one of the following Eclipse
- Eclipse Juno v4.2.2 (SR2)
- Eclipse Kepler v4.3.1 (SR1)
- Eclipse Classic v4.2.2
- Eclipse Classic v4.3.1