Comment 2 for bug 993293

You are right. I just saw the error in the logs of my dedicated server and did not check it myself.
It indeed works on linux. However on Windows machines, it does not work.

Talking about Windows, I guess the problem is in http://bazaar.launchpad.net/~widelands-dev/widelands/trunk/view/head:/src/io/filesystem/disk_filesystem.cc#L312

instead of the "/" there should be m_root (at least I think that's the constant that holds either \\ for windows or / for unix systems.)