Rebus: Is it not possible to use Rebus.Castle.Windsor along with Rebus 5.3 - rebus

Question

While trying to use rebus castle windsor along with rebus 5.3 then giving compile time error that "IHanlderActivator" is defined in an assembly which is not referenced, must add a reference to assembly rebus 4.0
Is rebus castle windsor only compatible with rebus 4.0 now?

Answer 1

It's certainly possible.
I've just created a Console Application (.NET 4.7.2) and installed the
Rebus
Rebus.Castle.Windsor
Rebus.XmlConfig (because I can see you're using that)
NuGet packages, which in turn resulted in the following packages.config:
<?xml version="1.0" encoding="utf-8"?>
<packages>
<package id="Castle.Core" version="4.2.0" targetFramework="net472" />
<package id="Castle.Windsor" version="4.1.0" targetFramework="net472" />
<package id="Newtonsoft.Json" version="11.0.1" targetFramework="net472" />
<package id="Rebus" version="5.3.1" targetFramework="net472" />
<package id="Rebus.Castle.Windsor" version="4.1.0" targetFramework="net472" />
<package id="Rebus.XmlConfig" version="4.0.0" targetFramework="net472" />
</packages>
With this little program:
namespace ConsoleApp1
{
class Program
{
static void Main()
{
using (var container = new WindsorContainer())
{
Configure.With(new CastleWindsorContainerAdapter(container))
.Transport(t => t.UseInMemoryTransport(new InMemNetwork(), "windsor-test"))
.Routing(r => r.TypeBasedRoutingFromAppConfig())
.Start();
Console.WriteLine("Press ENTER to quit");
Console.ReadLine();
}
}
}
}
I get this:
Could you try and check e.g. how your packages.config differs from mine?