not sure what causes it but I'm getting this:

java.lang.IllegalArgumentException: invalid version "6.0.0.CR01.1": invalid qualifier "CR01.1"
at org.osgi.framework.Version.validate(Version.java:205)
at org.osgi.framework.Version.<init>(Version.java:156)
at org.jboss.tools.as.runtimes.integration.util.RuntimeMatcher$RuntimeRangeRepresentation.matchesVersion(RuntimeMatcher.java:83)
at org.jboss.tools.as.runtimes.integration.util.RuntimeMatcher.findExistingRuntimes(RuntimeMatcher.java:171)
at org.jboss.tools.as.runtimes.integration.util.RuntimeMatcher.findExistingRuntimes(RuntimeMatcher.java:151)
at org.jboss.tools.project.examples.fixes.WTPRuntimeFix.getRuntimesFromPattern(WTPRuntimeFix.java:102)
at org.jboss.tools.project.examples.fixes.WTPRuntimeFix.getBestRuntime(WTPRuntimeFix.java:249)
at org.jboss.tools.project.examples.fixes.WTPRuntimeFix.canFix(WTPRuntimeFix.java:130)
at org.jboss.tools.project.examples.ProjectExamplesActivator.canFix(ProjectExamplesActivator.java:818)
at org.jboss.tools.central.jobs.RefreshTutorialsJob.run(RefreshTutorialsJob.java:68)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)