>The actual routing table is created dynamically at startup and it seems that this can't be constructed if the ErrorView() (or other) methods are generic.
>What's your signature of ErrorView() ?
>

I posted it in another reply but here it's again:

public PartialViewResult ErrorView<T>(T viewModel, string viewName, string message, string errorProperty = "") where T : BaseEditViewModel

Similar signatures for other methods, so I commented them as well. Now I'll try to uncomment them and comment just that line instead.

>>I can, of course, try to change the target .NET framework to be 4.5, don't think it will help.
>>
>>I've checked few projects in the solution and it says that it's targeting .NET 4.5.1. So why it's showing 4.0 version of the framework?
>
>Showing where ?

At the very bottom of the error page:

....
[HttpException (0x80004005): Cannot call action method 'System.Web.Mvc.PartialViewResult ErrorView[T](T, System.String, System.String, System.String)' on controller 'SysManager.Web.Areas.AccountingAudit.Controllers.PaymentTypesController' because the action method is a generic method.
Parameter name: methodInfo]
System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +9955652
System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +101
System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +254

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Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.34237