Hello,
since the update to version 2.2.3 I get the follwing error message at opening a previous existing dashboard.
Error message:
Could not create the view: org/netxms/client/datacollection/DataFormatter
java.lang.NoClassDefFoundError: org/netxms/client/datacollection/DataFormatter
at org.swtchart.internal.axis.AxisTickLabels.format(AxisTickLabels.java:627)
at org.swtchart.internal.axis.AxisTickLabels.updateTickLabelForLinearScale(AxisTickLabels.java:472)
at org.swtchart.internal.axis.AxisTickLabels.updateTickLabelForLinearScale(AxisTickLabels.java:422)
at org.swtchart.internal.axis.AxisTickLabels.update(AxisTickLabels.java:193)
at org.swtchart.internal.axis.AxisTick.updateTick(AxisTick.java:235)
at org.swtchart.internal.axis.AxisSet.updateVerticalTick(AxisSet.java:391)
at org.swtchart.internal.axis.AxisSet.updateLayoutData(AxisSet.java:301)
at org.swtchart.Chart.updateLayout(Chart.java:284)
at org.swtchart.Chart.<init>(Chart.java:89)
at org.netxms.ui.eclipse.charts.widgets.LineChart.<init>(LineChart.java:116)
at org.netxms.ui.eclipse.charts.api.ChartFactory.createLineChart(ChartFactory.java:27)
at org.netxms.ui.eclipse.dashboard.widgets.LineChartElement.<init>(LineChartElement.java:99)
at org.netxms.ui.eclipse.dashboard.widgets.DashboardControl.createElementWidget(DashboardControl.java:178)
at org.netxms.ui.eclipse.dashboard.widgets.DashboardControl.createContent(DashboardControl.java:127)
at org.netxms.ui.eclipse.dashboard.widgets.DashboardControl.<init>(DashboardControl.java:91)
at org.netxms.ui.eclipse.dashboard.widgets.EmbeddedDashboardElement.<init>(EmbeddedDashboardElement.java:96)
at org.netxms.ui.eclipse.dashboard.widgets.DashboardControl.createElementWidget(DashboardControl.java:163)
at org.netxms.ui.eclipse.dashboard.widgets.DashboardControl.createContent(DashboardControl.java:127)
at org.netxms.ui.eclipse.dashboard.widgets.DashboardControl.<init>(DashboardControl.java:91)
at org.netxms.ui.eclipse.dashboard.views.DashboardView.createPartControl(DashboardView.java:144)
at org.eclipse.ui.internal.ViewReference.createPartHelper(ViewReference.java:386)
at org.eclipse.ui.internal.ViewReference.createPart(ViewReference.java:240)
at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:595)
at org.eclipse.ui.internal.Perspective.showView(Perspective.java:2245)
at org.eclipse.ui.internal.WorkbenchPage.busyShowView(WorkbenchPage.java:1154)
at org.eclipse.ui.internal.WorkbenchPage$20.run(WorkbenchPage.java:3934)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchPage.showView(WorkbenchPage.java:3931)
at org.netxms.ui.eclipse.dashboard.actions.OpenDashboard.run(OpenDashboard.java:62)
at org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:251)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501)
at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4169)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3758)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.netxms.ui.eclipse.console.Application.start(Application.java:37)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
I absolutely have no idea what to do 
Is anyone able to help me with this?
Thanks in advance.