Open alpha testing of the 5.0 HD mod (online lobby).

We need to check where the folders containing the plugins that work properly are located and what they contain. Compare the location and contents of the non-working plugin's folder with the folders of the working ones. For example, here's the location and contents of my 1.38 folder: http://prntscr.com/ilwhaq
If I remember correctly, I had problems when the folder contained not the plugin file (.dll) itself, but another folder called HW_rules_1.38, and the plugin was inside it. Accordingly, I extracted the DLL from this extra subfolder, and everything started working.