well adding the constructor generated this error:
00:14:42 ERR : System.ComponentModel.Composition.CompositionException: The composition produced a single composition error. The root cause is provided below. Review the CompositionException.Errors property for more detailed information.
1) Object reference not set to an instance of an object.
Resulting in: An exception occurred while trying to create an instance of type 'VVVV.Nodes.C1_0DirectInputMouseNode'.
Resulting in: Cannot activate part 'VVVV.Nodes.C1_0DirectInputMouseNode'.
Element: VVVV.Nodes.C1_0DirectInputMouseNode --> VVVV.Nodes.C1_0DirectInputMouseNode --> TypeCatalog (Types='VVVV.Nodes.C1_0DirectInputMouseNode').
Resulting in: Cannot get export 'VVVV.Nodes.C1_0DirectInputMouseNode (ContractName="VVVV.PluginInterfaces.V1.IPluginBase")' from part 'VVVV.Nodes.C1_0DirectInputMouseNode'.
Element: VVVV.Nodes.C1_0DirectInputMouseNode (ContractName="VVVV.PluginInterfaces.V1.IPluginBase") --> VVVV.Nodes.C1_0DirectInputMouseNode --> TypeCatalog (Types='VVVV.Nodes.C1_0DirectInputMouseNode').
at System.ComponentModel.Composition.Hosting.CompositionServices.GetExportedValueFromComposedPart(ImportEngine engine, ComposablePart part, ExportDefinition definition)
at System.ComponentModel.Composition.Hosting.CatalogExportProvider.GetExportedValue(CatalogPart part, ExportDefinition export, Boolean isSharedPart)
at System.ComponentModel.Composition.Hosting.CatalogExportProvider.CatalogExport.GetExportedValueCore()
at System.ComponentModel.Composition.Primitives.Export.get_Value()
at System.ComponentModel.Composition.ExportServices.GetCastedExportedValue[T](Export export)
at System.ComponentModel.Composition.ExportServices.GetExportLifetimeContextFromExport[T](Export export)
at System.ComponentModel.Composition.ExportServices.<>c**DisplayClass1c`1.<CreateStronglyTypedExportFactoryOfT>b**1b()
at System.ComponentModel.Composition.ExportFactory`1.CreateExport()
at VVVV.Hosting.Factories.DotNetPluginFactory.CreatePlugin(INodeInfo nodeInfo, IPluginHost2 pluginHost)
at VVVV.Hosting.Factories.DotNetPluginFactory.CreateNode(INodeInfo nodeInfo, IInternalPluginHost pluginHost)
at VVVV.Hosting.Factories.AbstractFileFactory`1.Create(INodeInfo nodeInfo, INode host)
at VVVV.Hosting.HDEHost.factory_NodeInfoUpdated(Object sender, INodeInfo info)
what can i do now?