Thread:Extension talk:Maps/Error with Mapsize/reply (9)

You do not appear to be running the latest version at all, looking at http://gewiki.square7.ch/index.php?title=Spezial:Version

The php warning should actually be fixed, another person that had the same issue does not have it since 0.x.4 a7.

Most likely your width/height issue will be fixed once you get rid of the php warning, if it's not, remove your width/height limit setting in localsettings if you have set it.