I've been having this problem since this step in the installation process. When extracting my dbcs, I place the files found in arcemu/tools in programfiles(86x)/worldofwarcraft. I run the exe and the DBC folder is created with quite a lot of files. In the installation guide it says that maps should be created, too, which it isn't. At first I wasn't sure if this was an issue (who needs maps to play???
) or that I'd figure it out once it came to it, so I continued with the installation manually creating the directories. Once updating and running the world.exe, it said at first that some of my dbcs were missing. Then I tried again with another extractor found through google, and this time it said that they were invalid. I have ran through this problem while reading over the entire wiki without success. The current issue is that the commandprompt says that there is "possible invalid format in file DBC/WorldMapOverlay.dbc, and that my maps folder is empty (edit, this is the issue with running the ad.exe provided by arcemu). I'm trying to set this up for my wife who goes on a 9 month deployment on a ship (she is in the Navy) without personal internet access. Thank you so much for the help.
AHA! I see why now. It's not extracting it! See screen shot.
EDIT: SOLVED! Didn't see that the version of WOW that I had was 4.0.0. ad.exe is extracting the maps as I speak. Sorry for wasting your time reading this, but hopefully it helps someone else?