Castle.Core >= 5.0.0 seems to be incompatible

[barbaraacsilva]

I have a solution with some direct references to Castle.Core version 4.4.1 and some direct references to Ninject.Extensions.Factory version 3.3.3. When I tried upgrading Castle.Core to 5.1.1 some unit tests started failing with an error about not locating the assembly for Castle.Core 4.0.0.0. After multiple attempts at updating binding redirects, deleting every bin and obj folder, rebuilding my solution and so on, I got build warnings related to conflicts with different versions of Castle.Core, and Ninject.Extension.Factory appeared in the message.
I've also tried with version 5.0.0 and got the same problems.
Ninject.Extensions.Factory 3.3.3 has a dependency for Castle.Core >= 4.2.0, but I wonder if for some reason it doesn't work with >= 5.0.0? Could someone confirm that? Thanks a lot!