SC2Mapster

I added build thortower to scv. And made the following changes:
Field    ThorTower
(Basic) Ability: Abilities +    (Stop|Attack|Salvage)
(Basic) Ability: Command Card +    ():((Move|Stop|Hold Position|Attack|Patrol|Cancel|Salvage)):((Ability Command|Ability Command|Ability Command|Ability Command|Ability Command|Ability Command|Ability Command)):((Move|Stop|Hold Position|Attack|Patrol|Cancel|Salvage)):(((None)|(None)|(None)|(None)|(None)|(None)|(None))):((None|None|None|None|None|None|None)):(((None)|(None)|(None)|(None)|(None)|(None)|(None))):((||||||)):((Disabled|Disabled|Disabled|Disabled|Disabled|Disabled|Disabled)):((Disabled|Disabled|Disabled|Disabled|Disabled|Disabled|Disabled)):((Enabled|Enabled|Enabled|Enabled|Enabled|Enabled|Enabled)):((0|0|0|0|0|2|2)):((0|1|2|4|3|4|3))
(Basic) Combat: Weapons +    (Thor - Thor's Hammer|Thor - Javelin Missile Launchers Copy):((None)|(None))
(Basic) Cost: Cost +    (400|0|0|0)
(Basic) Cost: Cost Category    None
(Basic) Movement: Acceleration    0
(Basic) Movement: Collide +    
(Basic) Movement: Speed    0
(Basic) Stats: Supplies    0
(Basic) Unit: Attributes +    Armored, Mechanical, Massive, Structure
(Basic) Unit: Flags +    Turnable, Cannot Be Clicked, Cannot Be Highlighted, No Tooltip, Prevent Destroy, Use Line of Sight, Kill Credit, Invulnerable, Turn Before Moving, Show Resources, Keep Rally On TargetLost, Revivable
(Basic) Unit: Name    ThorTower
Editor: Editor Flags +    
Movement: Mover    (None)
Movement: Pathing Footprint    Footprint 3x3 No Collision
Movement: Pathing Footprint - Placement    Footprint 3x3
UI: Description    Button/Tooltip/ThorTower (Unknown)

What else do I need it says placement location invalid?