After installing the latest Eclipse:

Eclipse SDK
Version: 4.4.0
Build id: I20131030-2000

And then install the latest scale IDE via the update site: http://download.scala-ide.org/sdk/e38/scala210/dev/site

I see this error in the error log and am unable to enable JDT weaving

Unhandled event loop exception

java.lang.NoClassDefFoundError: org/eclipse/osgi/framework/internal/core/FrameworkProperties
at scala.tools.eclipse.contribution.weaving.jdt.configuration.WeavingStateConfigurer.getConfigArea(WeavingStateConfigurer.java:393)
at scala.tools.eclipse.contribution.weaving.jdt.configuration.WeavingStateConfigurer.currentConfigStateIsWeaving(WeavingStateConfigurer.java:400)
at scala.tools.eclipse.contribution.weaving.jdt.configuration.WeavingStateConfigurer.changeWeavingState(WeavingStateConfigurer.java:92)
at scala.tools.eclipse.diagnostic.DiagnosticDialog.turnWeavingOn(DiagnosticDialog.scala:357)
at scala.tools.eclipse.diagnostic.DiagnosticDialog.okPressed(DiagnosticDialog.scala:345)

Caused by: java.lang.ClassNotFoundException: org.eclipse.osgi.baseadaptor.HookConfigurator
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)

Earlier in the log I see this:

error loading hook: org.eclipse.equinox.weaving.hooks.WeavingHook

java.lang.NoClassDefFoundError: org/eclipse/osgi/baseadaptor/HookConfigurator
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)

Any help would be great.

Thanks
Andy