ServiceMix won't boot when Equinox 3.6 or Felix 4.0 is used

If you swap out Felix 3.0.9 for a 4.0.x version ServiceMix won't boot up at all. The following error occurs:

ERROR: Error parsing system bundle export statement: org.osgi.framework.startlevel;uses:="org.osgi.framework";version="1.0", ... , org.apache.xml.serialize; version="2.11.0",
(org.osgi.framework.BundleException: Exported package names cannot be zero length.)
org.osgi.framework.BundleException: Exported package names cannot be zero length.
at org.apache.felix.framework.util.manifestparser.ManifestParser.normalizeExportClauses(ManifestParser.java:729)
at org.apache.felix.framework.util.manifestparser.ManifestParser.<init>(ManifestParser.java:191)
at org.apache.felix.framework.ExtensionManager.<init>(ExtensionManager.java:220)
at org.apache.felix.framework.Felix.<init>(Felix.java:391)
at org.apache.felix.framework.FrameworkFactory.newFramework(FrameworkFactory.java:28)
at org.apache.karaf.main.Main.launch(Main.java:276)
at org.apache.karaf.main.Main.main(Main.java:480)

If you switch to Equinox the same error occurs but there is no log message.