New Post: Issue using Composite.Lists.Tabs add in

I've recently installed C1 ver. 4.3 at my shared hgosting provider. Upon installing Composite.Lists.Tabs addin package I tried to add some TabGroups and TabItems as per instructions given here:

http://www.composite.net/Products/Add-ons/All/Composite.Lists.Tabs

Adding TabGroups went through OK. Adding tabItems failed with the following server Log message:

System.ArgumentException: The Function named 'Widgets.FontIconSelector.GetIconsNames' is not known. Ensure it exists with the exact spelling and casing you provided.
at Composite.Functions.Foundation.MetaFunctionContainer.GetFunction(String functionName)

at Composite.Functions.Foundation.MetaFunctionProviderRegistryImpl.GetFunction(String name)
at Composite.Functions.FunctionTreeBuilder.BuildFunctionRuntimeNode(XElement element, Boolean ignoreUnusedParameters)
at Composite.Functions.FunctionTreeBuilder.BuildParameterFunctionRuntimeNode(XElement element)
at Composite.Functions.FunctionTreeBuilder.BuildWidgetFunctionRuntimeNode(XElement element)
at Composite.Functions.FunctionTreeBuilder.Build(XElement element, Boolean ignoreUnusedParameters)
at Composite.Data.DynamicTypes.DataTypeDescriptorFormsHelper.GenerateForm()
at Composite.C1Console.Trees.Workflows.GenericAddDataWorkflow.step1CodeActivity_DisplayForm_ExecuteCode(Object sender, EventArgs e)
at System.Workflow.ComponentModel.Activity.RaiseEvent(DependencyProperty dependencyEvent, Object sender, EventArgs e)
at System.Workflow.Activities.CodeActivity.Execute(ActivityExecutionContext executionContext)
at System.Workflow.ComponentModel.ActivityExecutor1.Execute(T activity, ActivityExecutionContext executionContext)
at System.Workflow.ComponentModel.ActivityExecutor1.Execute(Activity activity, ActivityExecutionContext executionContext)
at System.Workflow.ComponentModel.ActivityExecutorOperation.Run(IWorkflowCoreRuntime workflowCoreRuntime)
at System.Workflow.Runtime.Scheduler.Run()
System.InvalidOperationException: Error executing workflow 5e6b4948-d958-4708-9fe9-d3902f7bcd1e
at Composite.C1Console.Workflow.WorkflowFacadeImpl.RunWorkflow(Guid instanceId)
at Composite.C1Console.Workflow.WorkflowFacadeImpl.RunWorkflow(WorkflowInstance workflowInstance)
at Composite.C1Console.Workflow.WorkflowActionExecutor.Execute(String serializedEntityToken, String serializedActionToken, ActionToken actionToken, FlowControllerServicesContainer flowControllerServicesContainer)
at Composite.C1Console.Actions.ActionExecutorFacade.Execute(IActionExecutorSerializedParameters actionExecutor, String serializedEntityToken, String serializedActionToken, ActionToken actionToken, FlowControllerServicesContainer flowControllerServicesContainer)
at Composite.C1Console.Actions.ActionExecutorFacade.Execute(EntityToken entityToken, ActionToken actionToken, FlowControllerServicesContainer flowControllerServicesContainer, TaskManagerEvent taskManagerEvent)
at Composite.Core.WebClient.FlowMediators.ActionExecutionMediator.ExecuteElementAction(ElementHandle elementHandle, ActionHandle actionHandle, String consoleId)

at Composite.Core.WebClient.FlowMediators.TreeServicesFacade.ExecuteElementAction(String providerName, String serializedEntityToken, String piggybag, String serializedActionToken, String consoleId)
at Composite.Services.TreeServices.ExecuteSingleElementAction(ClientElement clientElement, String serializedActionToken, String consoleId)

I had uninstalled C1, installed it again and to no avail.

Best regards

Aljosa