TF30177 Team Project Creation Failed

Hello,

I wonder if anyone can help I am getting the following error when trying to create a new team project:

TF30177: Team Project Creation Failed

New Team Project Wizard encountered the following error and could not continue.

The error log is as follows:

---begin Exception entry---
Time: 2013-07-16T09:42:47
Module: Engine
Event Description: TF30162: Task "WITs" from Group "WorkItemTracking" failed
Exception Type: Microsoft.TeamFoundation.Client.PcwException
Exception Message: There is a problem on the server. Contact your Team Foundation Server administrator.
Stack Trace:
   at Microsoft.VisualStudio.TeamFoundation.WorkItemTracking.WitPcwPlugin.PcwPluginComponentCreator.Execute(ProjectCreationContext ctxt, XmlNode taskXml)
   at Microsoft.VisualStudio.TeamFoundation.PCW.ProjectCreationEngine.TaskExecutor.PerformTask(IProjectComponentCreator componentCreator, ProjectCreationContext context, XmlNode taskXml)
   at Microsoft.VisualStudio.TeamFoundation.PCW.ProjectCreationEngine.RunTask(Object taskObj)
--   Inner Exception   --
Exception Message: There is a problem on the server. Contact your Team Foundation Server administrator. (type UnexpectedErrorException)
Exception Stack Trace:    at Microsoft.TeamFoundation.WorkItemTracking.Client.WorkItemStore.SendUpdatePackage(XmlElement package, XmlElement& result, Boolean bulk)
   at Microsoft.TeamFoundation.WorkItemTracking.Client.Provision.UpdatePackageOptimizer.Update(XmlElement updatePackage)
   at Microsoft.TeamFoundation.WorkItemTracking.Client.Provision.UpdatePackageOptimizer.Submit(XmlElement rootElement)
   at Microsoft.TeamFoundation.WorkItemTracking.Client.Provision.UpdatePackageOptimizer.Submit(Snapshot snapshot, Int32 projectId, XmlElement updatePackage)
   at Microsoft.TeamFoundation.WorkItemTracking.Client.Provision.ProvisionClass.Submit(ActionType action, Snapshot snapshot, Int32 projectId, WITImporter importer)
   at Microsoft.TeamFoundation.WorkItemTracking.Client.Provision.ProvisionClass.ImportValidateWorkItemTypeInternal(Int32 projectId, String methodologyName, XmlElement typeElement, ActionType action)
   at Microsoft.TeamFoundation.WorkItemTracking.Client.WorkItemTypeCollection.Import(String definition, String methodologyName)
   at Microsoft.VisualStudio.TeamFoundation.WorkItemTracking.WitPcwPlugin.PcwPluginComponentCreator.WitPcwTask.WorkItemTypesTask.UploadTypeDefinition(String file, Boolean execute)
   at Microsoft.VisualStudio.TeamFoundation.WorkItemTracking.WitPcwPlugin.PcwPluginComponentCreator.WitPcwTask.WorkItemTypesTask.Execute()
   at Microsoft.VisualStudio.TeamFoundation.WorkItemTracking.WitPcwPlugin.PcwPluginComponentCreator.Parse(ContextWrapper wrapper, XmlNode taskXml, Boolean fExecute)
   at Microsoft.VisualStudio.TeamFoundation.WorkItemTracking.WitPcwPlugin.PcwPluginComponentCreator.Execute(ProjectCreationContext ctxt, XmlNode taskXml)

Inner Exception Details:

Exception Message: Attempting to set a non-NULL-able column's value to NULL. (type SoapException)SoapException Details: <detail ExceptionMessage="Attempting to set a non-NULL-able column's value to NULL." BaseExceptionName="System.Data.SqlClient.SqlException"><details id="0" xmlns="http://schemas.microsoft.com/TeamFoundation/2005/06/WorkItemTracking/faultdetail/03" /></detail>
Exception Stack Trace:    at Microsoft.TeamFoundation.WorkItemTracking.Proxy.RetryHandler.HandleSoapException(SoapException se)
   at Microsoft.TeamFoundation.WorkItemTracking.Proxy.WorkItemServer.Update(String requestId, XmlElement package, XmlElement& result, MetadataTableHaveEntry[] metadataHave, String& dbStamp, IMetadataRowSets& metadata)
   at Microsoft.TeamFoundation.WorkItemTracking.Client.WorkItemStore.SendUpdatePackage(XmlElement package, XmlElement& result, Boolean bulk)

--- end Exception entry ---

I am using Visual Studio Ultimate 2012 Update 2, Team Foundation Server 2012 update 2 and SQL Server 2008 R2. The problem is only affecting one of my collections, I can add new project to other collections with no problems.

Any help would be greatly appreciated.

Thanks

Gareth