Issues with GWT Eclipse Plugin and Eclise Oxygen 1.a

Greetings,

I am wondering if anybody else ran into an error like this:

java.lang.NoSuchMethodError: org.eclipse.jdt.internal.core.JavaProject.computePackageFragmentRoots(Lorg/eclipse/jdt/core/IClasspathEntry;Lorg/eclipse/jdt/internal/compiler/util/ObjectVector;Ljava/util/HashSet;Lorg/eclipse/jdt/core/IClasspathEntry;ZLjava/util/Map;)V

after upgrading to the most recent Eclipse Oxygen 1.a

I am having problems editing GWT properties of a project and also compiling my GWT application project as the GWT Project Validator fails with the above error.

Thanks!
Oleg

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