Error TF215106 or TF225000 when trying to Delete or Create a New Build Definition In Team Foundation Server 2010 Team Build

using System;
using Microsoft.TeamFoundation;
using Microsoft.TeamFoundation.Build.Common;
using Microsoft.TeamFoundation.Client;
using Microsoft.TeamFoundation.Framework.Client;
using Microsoft.TeamFoundation.Framework.Common;
using Microsoft.TeamFoundation.Server;
 
namespace UpdateProjectAdministratorsGroupPermissions
{
    partial class Program
    {
        static void Main(string[] args)
        {
            Uri tpcURI = new Uri(s_serverUrl);
 
            TfsTeamProjectCollection tpc = new TfsTeamProjectCollection(tpcURI);
            ICommonStructureService css = tpc.GetService<ICommonStructureService>();
            IIdentityManagementService ims = tpc.GetService<IIdentityManagementService>();
            ISecurityService securityService = tpc.GetService<ISecurityService>();
 
            SecurityNamespace buildSecurity = securityService.GetSecurityNamespace(BuildSecurity.BuildNamespaceId);
 
            Int32 permissionsToGrant = BuildPermissions.AllPermissions
                & ~BuildPermissions.UpdateBuildInformation
                & ~BuildPermissions.OverrideBuildCheckInValidation;
 
            foreach (ProjectInfo projectInfo in css.ListProjects())
            {
                if (projectInfo.Status == ProjectState.WellFormed)
                {
                    // Look up the project administrator group.
                    TeamFoundationIdentity[] groups = ims.ListApplicationGroups(projectInfo.Uri, ReadIdentityOptions.None);
 
                    // Find the administrators group.
                    TeamFoundationIdentity adminGroup = null;
                    foreach (TeamFoundationIdentity group in groups)
                    {
                        if (group.GetAttribute("SpecialType", String.Empty) == "AdministrativeApplicationGroup")
                        {
                            adminGroup = group;
                            break;
                        }
                    }
 
                    if (adminGroup != null)
                    {
                        String securityToken = LinkingUtilities.DecodeUri(projectInfo.Uri).ToolSpecificId;
 
                        buildSecurity.SetPermissions(securityToken, adminGroup.Descriptor, permissionsToGrant, 0, true);
                    }
                }
            }
        }
 
        // Defines your collection url here
        private static string s_serverUrl = "http://localhost:8080/tfs/DefaultCollection";
    }
}