Is RTC 4.0.7 Supported On Eclipse Luna?

Is the RTC 4.0.7 client supported installed into Eclipse Luna?  When I try to load a sprint plan, I get:

java.lang.NoClassDefFoundError: org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader
    at com.ibm.team.rtc.common.scriptengine.internal.types.api.ApiTypeResolver.resolveClass(ApiTypeResolver.java:89)
    at com.ibm.team.rtc.common.scriptengine.internal.types.api.ApiTypeResolver.resolve(ApiTypeResolver.java:57)
    at com.ibm.team.rtc.common.scriptengine.environment.dojo.DojoFeature.injectUrl(DojoFeature.java:234)
    at com.ibm.team.rtc.common.scriptengine.environment.dojo.DojoFeature.access$3(DojoFeature.java:208)
    at com.ibm.team.rtc.common.scriptengine.environment.dojo.DojoFeature$1.call(DojoFeature.java:122)
    at org.mozilla.javascript.Interpreter.interpretLoop(Interpreter.java:3335)

Chris