I have noticed that some of the old, great ums maps seem not to be working since the patch 1.15 (or even the earlier ones). I think it has been caused by blizzard banning colour characters in map names.
I have patched Worms 1.83 (one of the greatest UMS maps) and "marine boot camp" so that they are now playable in this patch.
Unfortunately this means that I had to unprotect them and that some of the texts could have been deleted.
Anyway, the maps can be found here:
http://rapidshare.com/files/174627986/tl.rar.html
Worms - this a 4 player use map settings map, where each one controls a dropship, which is the "head" of a worm. The head has to move and leaves a trail ("body") similar to the movie TRON, or the old Nokia game Snake. Each round the players start with different special abilities acessed by dropping the unit from the head - usually marines (aka "digs") which work like simple bombs and can kill the allies/their bodies, or scourge, which act as dumbfire missiles.
I really encourage you to try this map.
As for marine boot camp - it is a very nice microcontrol map. It's a great game when you have a group of few smart people who speak English. The map isnt mega hard, but I have failed to complete it with public players for few times in a row.
I am a big fan of microcontrol maps, but Worms is probably my favourite ums map - I recommend you to try it.
If you see any bugs, please PM me - Ive tested the map and everything seems to be fine (in order to fix it, I had to unprotect it, since the author didnt have it any more; consequently some "strings" (things like names) have been deleted and I had to replace them).
Also note, that if you like the map, you can play unlimited rounds - when the game starts just go north, to find a hidden beacon, instead of picking the number of rounds.