Slitherine

I bought the base game and the DLC today from Slitherine. Downloaded base game and updated it, then proceeded to download the DLC. However, when trying to install the DLC I receive a message that I already have version 1.21 installed! The base game and the DLC downloads were different sizes.Has anyone else had any problems in installing the DLC recently?

So I then activated my license codes on Steam and the DLC is in my library and it states that I have it installed. But how can I tell whether the DLC has successfully installed into the main program?

once installed go to any battle and try and use it, either in skirmish or online or elsewhere in the game

Thanks, zakblood