Step 1: You go to a replay site and download a nice shiny new replay.
Step 2: You go to start it, only to be greeted by a not so nice but probably shiny message that you don't have version #22509034590450495 of Lost Temple.
Step 3: You scour the internet for said map and put it in your map folder.
Step 4: You go back to the game to try to watch it, only to notice that the god damned map has to be in the same god damned fucking folder as the person who saved the replay had it in.
Step 5: You move the map to c:\games\warcraft 3\replay\annoying league with renamed maps\season 50\mapname
It's annoying.
Not as bad as not being able to watch replays online, but annoying.