I am creating an ECore Modeling Project in eclipse. As soon as the project is created, I get the following error in the Model Perspective:
java.lang.ClassCastException: org.eclipse.swt.layout.GridData cannot be cast to org.eclipse.swt.layout.FillData
Failed to create the part's controls
I have the latest build of the Eclipse framework:
eclipse.buildId=4.9.0.I20180906-0745
java.version=1.8.0_161
That looks like Eclipse bug 540039 a duplicate of 539333.
This is marked as fixed in Eclipse Sirius 6.0.2