java.lang.IllegalStateException: Profile <some profile name> is not current. Expected timestamp 0 but was 0.
	at org.eclipse.equinox.internal.p2.engine.SimpleProfileRegistry.lockProfile(SimpleProfileRegistry.java:854)
	at org.eclipse.equinox.internal.p2.engine.Engine.perform(Engine.java:67)
	at org.eclipse.equinox.internal.p2.engine.Engine.perform(Engine.java:44)
	at org.eclipse.equinox.internal.provisional.p2.director.PlanExecutionHelper.executePlan(PlanExecutionHelper.java:42)
	at org.eclipse.oomph.p2.internal.core.ProfileTransactionImpl$3.commit(ProfileTransactionImpl.java:543)
	at org.eclipse.oomph.p2.internal.core.ProfileTransactionImpl.commit(ProfileTransactionImpl.java:340)
	at org.eclipse.oomph.setup.p2.impl.P2TaskImpl.perform(P2TaskImpl.java:720)
	at org.eclipse.oomph.setup.internal.core.SetupTaskPerformer.doPerformNeededSetupTasks(SetupTaskPerformer.java:3121)
	at org.eclipse.oomph.setup.internal.core.SetupTaskPerformer.access$1(SetupTaskPerformer.java:3064)
	at org.eclipse.oomph.setup.internal.core.SetupTaskPerformer$WorkspaceUtil$1.run(SetupTaskPerformer.java:4282)
	at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2240)
	at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2267)
	at org.eclipse.oomph.setup.internal.core.SetupTaskPerformer$WorkspaceUtil.performNeededSetupTasks(SetupTaskPerformer.java:4276)
	at org.eclipse.oomph.setup.internal.core.SetupTaskPerformer$WorkspaceUtil.access$0(SetupTaskPerformer.java:4274)
	at org.eclipse.oomph.setup.internal.core.SetupTaskPerformer.performNeededSetupTasks(SetupTaskPerformer.java:3055)
	at org.eclipse.oomph.setup.internal.core.SetupTaskPerformer.performTriggeredSetupTasks(SetupTaskPerformer.java:3030)
	at org.eclipse.oomph.setup.internal.core.SetupTaskPerformer.perform(SetupTaskPerformer.java:2930)
	at org.eclipse.oomph.setup.ui.wizards.ProgressPage$9.run(ProgressPage.java:556)
	at org.eclipse.oomph.setup.ui.wizards.ProgressPage$11$1.run(ProgressPage.java:682)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)

	private boolean checkTimestamps(IProfile profile, IProfile internalProfile) {
		long[] timestamps = listProfileTimestamps(profile.getProfileId());
		if (timestamps.length == 0) {
			if (DebugHelper.DEBUG_PROFILE_REGISTRY)
				DebugHelper.debug(PROFILE_REGISTRY, "check timestamp: expected " + profile.getTimestamp() + " but no profiles were found"); //$NON-NLS-1$ //$NON-NLS-2$
			resetProfiles();
			return false;
		}

		long currentTimestamp = (timestamps.length == 0) ? -1 : timestamps[timestamps.length - 1];
		if (profile.getTimestamp() != currentTimestamp) {
			if (DebugHelper.DEBUG_PROFILE_REGISTRY)
				DebugHelper.debug(PROFILE_REGISTRY, "check timestamp: expected " + profile.getTimestamp() + " but was " + currentTimestamp); //$NON-NLS-1$ //$NON-NLS-2$
			if (internalProfile.getTimestamp() != currentTimestamp)
				resetProfiles();
			return false;
		}

		return true;
	}