WFFM 8.0 rev. 150224 update package installation Issue

Recently, I tried to upgrade sitecore 8.0 update-1 to Sitecore 8.0 update-2 with WFFM module update from WFFM 8.0 rev 141217 to WFFM 8.0 rev 150224

while in the wffm upgrade progress, at the final step, upgrade process breaks with following error.

Server Error in '/' Application.
--------------------------------------------------------------------------------
 Could not resolve type name: Sitecore.WFFM.Services.Pipelines.Initialize.RegisterHttpControllerActivator, Sitecore.WFFM.Services (method: Sitecore.Configuration.Factory.CreateType(XmlNode configNode, String[] parameters, Boolean assert)).
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Exception: Could not resolve type name: Sitecore.WFFM.Services.Pipelines.Initialize.RegisterHttpControllerActivator, Sitecore.WFFM.Services (method: Sitecore.Configuration.Factory.CreateType(XmlNode configNode, String[] parameters, Boolean assert)).

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[Exception: Could not resolve type name: Sitecore.WFFM.Services.Pipelines.Initialize.RegisterHttpControllerActivator, Sitecore.WFFM.Services (method: Sitecore.Configuration.Factory.CreateType(XmlNode configNode, String[] parameters, Boolean assert)).]
   Sitecore.Diagnostics.Error.Raise(String error, String method) +129
   Sitecore.Configuration.Factory.CreateType(XmlNode configNode, String[] parameters, Boolean assert) +432
   Sitecore.Configuration.Factory.CreateFromTypeName(XmlNode configNode, String[] parameters, Boolean assert) +67
   Sitecore.Configuration.Factory.CreateObject(XmlNode configNode, String[] parameters, Boolean assert, IFactoryHelper helper) +141
   Sitecore.Pipelines.CorePipelineFactory.GetObjectFromType(String type, XmlNode processorNode) +144
   Sitecore.Pipelines.CoreProcessor.GetMethod(Object[] parameters) +124
   Sitecore.Pipelines.CorePipeline.Run(PipelineArgs args) +351
   Sitecore.Nexus.Web.HttpModule.Application_Start() +175
   Sitecore.Nexus.Web.HttpModule.Init(HttpApplication app) +516
   System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) +530
   System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) +304
   System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +404
   System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +475

[HttpException (0x80004005): Could not resolve type name: Sitecore.WFFM.Services.Pipelines.Initialize.RegisterHttpControllerActivator, Sitecore.WFFM.Services (method: Sitecore.Configuration.Factory.CreateType(XmlNode configNode, String[] parameters, Boolean assert)).]
   System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +12979668
   System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +159
   System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest  ...

So, I take a look into Sitecore.WFFM.Service.dll by decoding it and found that a config entry in the /App_Config/includes/sitecore.WFFM.services.config file was pointing to non-existing namespace.

Then, I checked the standalone installation of WFFM 8.0 rev. 150224 package /App_Config/Includes config files and copy those files into my instance.
Then, ran the WFFM module upgrade again.
Everthing worked fine.

After informing the finding, sitecore has reported this as a bug and they will provide a fix for this in future.

Hope this helps to someong !