The recommended game version for the user generated maps is version 1.09 for the main game (Tiberium Wars) and patch 1.02 for the expansion (Kanes Wrath).
You can find the patches here: Link
Move the “Mapname”-folder into your CNC3 map directory:
You will find the map folder for Command & Conquer 3 – Tiberium Wars here (Windows Vista/7/8/10):
“C:\Users\”Username”\AppData\Roaming\Command & Conquer 3 Tiberium Wars\Maps”
The maps for Command and Conquer 3 – Kanes Wrath are located here:
“C:\Users\”Username”\AppData\Roaming\Command & Conquer 3 Kanes Wrath\Maps”
In some cases the directory is somewhere else on the hard drive. In that case simply search for the folder “Command & Conquer 3 Tiberium Wars”. Typically you will get three results for your system: The installation directory, your save game directory, and the directory mentioned above containing the “Maps”-folder.
Please notice: You might have to run the game once from your Windows profile and choose a player name in order for CNC to create the folders.