Okay, stupid me is stupid. After Having started wars for once I now can see the servers. Yet if I want to join them I immediately get "Server authentication failed (3)" as a reply. Is this due to the fact that I copied the MWLL files (which work fine in every other respect) from the directory, killed wars, installed and patched wars and then pasted them back in the mod folder I created via the MWLL 0.4.exe?
Sorry to fail so hard, but I really don't know what I am doing wrong and would like to bypass waiting another 3-4 hours for the download.

EDIT: The repair function says everything is fine, my current version is 0.4.1.