The activator for bundle is invalid

Question

I\'m trying to create a simple plugin in eclipse. When I run the application, I see this error in log file:

org.osgi.framework.BundleException : The a

Answer 1

I got the same exception. The underlying problem was a ClassCastException. My bundle requires org.osgi.core 4.3 whereas the equinox launcher uses 4.2.

Regards Roland