FATAL: Could not open mission.lvl

[KommissarReb]

I'm trying to create a custom map for Star Wars Battlefront 2 but when I attempt to playtest it the game crashes to my desktop with a popup error: FATAL: Could not open mission.lvl

I went into the AppData/lLocal/VirtualStore/Program Files (x86)/LucasArts/Star Wars Battlefront II/GameData/Addon to find my map file (which is called "KJH") and in it's data/_LVL_PC folder there is nothing in it. How do I go about creating the necessary files? I looked up http://swbfmodding.wikidot.com/getting-started#toc12 and https://www.swbfgamers.com/index.php?topic=3042.0 but didn't find any answers to this problem.

[wsa30h]

what error does visual munge give you ? also if you find what lua it is i might be able to help. usually this problem happens when there is something wrong in the lua.