TFS Plugin - Build Error

[AboveBeyond]

Hi, i connected Jenkins to our TFS server , while trying to create a new build im getting the following error:

FATAL: java.lang.RuntimeException: com.microsoft.tfs.core.clients.versioncontrol.exceptions.VersionControlException: com.microsoft.tfs.core.exceptions.TECoreException: TF400898: An Internal Error Occurred. Activity Id: dfd954bf-fc5e-4816-8b01-d9d59ee49cb7. java.lang.RuntimeException: java.lang.RuntimeException: com.microsoft.tfs.core.clients.versioncontrol.exceptions.VersionControlException: com.microsoft.tfs.core.exceptions.TECoreException: TF400898: An Internal Error Occurred. Activity Id: dfd954bf-fc5e-4816-8b01-d9d59ee49cb7. at hudson.plugins.tfs.model.Server.execute(Server.java:157) at hudson.plugins.tfs.model.Project.getFiles(Project.java:256) at hudson.plugins.tfs.actions.CheckoutAction.checkout(CheckoutAction.java:57) at hudson.plugins.tfs.TeamFoundationServerScm.checkout(TeamFoundationServerScm.java:270) at hudson.model.AbstractProject.checkout(AbstractProject.java:1269) at hudson.model.AbstractBuild$AbstractBuildExecution.defaultCheckout(AbstractBuild.java:607) at jenkins.scm.SCMCheckoutStrategy.checkout(SCMCheckoutStrategy.java:86) at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:529) at hudson.model.Run.execute(Run.java:1738) at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43) at hudson.model.ResourceController.execute(ResourceController.java:98) at hudson.model.Executor.run(Executor.java:410) Caused by: java.lang.RuntimeException: com.microsoft.tfs.core.clients.versioncontrol.exceptions.VersionControlException: com.microsoft.tfs.core.exceptions.TECoreException: TF400898: An Internal Error Occurred. Activity Id: dfd954bf-fc5e-4816-8b01-d9d59ee49cb7. at com.microsoft.tfs.core.clients.versioncontrol.soapextensions.Workspace.get(Workspace.java:2666) at com.microsoft.tfs.core.clients.versioncontrol.soapextensions.Workspace.get(Workspace.java:2527) at com.microsoft.tfs.core.clients.versioncontrol.soapextensions.Workspace.get(Workspace.java:2515) at com.microsoft.tfs.core.clients.versioncontrol.soapextensions.Workspace.get(Workspace.java:2491) at hudson.plugins.tfs.commands.GetFilesToWorkFolderCommand.call(GetFilesToWorkFolderCommand.java:60) at hudson.plugins.tfs.commands.GetFilesToWorkFolderCommand.call(GetFilesToWorkFolderCommand.java:17) at hudson.remoting.LocalChannel.call(LocalChannel.java:45) at hudson.plugins.tfs.model.Server.execute(Server.java:153) ... 11 more



What causing the problem?