How to delete conflicting Garry's Mod maps

[SaintLuther]

If you are getting an error that your version of a Garry's Mod map conflicts with the server's, then you must delete your local copy of this map.

To find your local version of the map, go to your local Garry's Mod downloaded maps folder.

To find that folder, go to "C:\Program Files (x86)\Steam\steamapps\common\GarrysMod\garrysmod\download\maps" in Windows Explorer, or by pressing Windows Key + R and pasting the above directory in the box.

   

Once you find the conflicting map, right click it and click delete, like so:

   

If this doesn't work, then unsubscribe from all workshop addons that may contain the map in question.
If you have a Mac, get Windows.