'trigger/unit/object data missing or invalid?'

[ROBBYDOBBY]

hey,

im creating a legend of zelda rpg *audience say yay*
and have got to a stand-still im making the map but im stuck for choice on what to do next,
so i try and look on a map i got from battle.net like the lotr 1s but i load it up
and it says rather the following

'object/unit/trigger dat missing or invalid' (one of them comes up each time)

so,im just thinking as im going but please help me with this prob (cos im only 11)

also....
how could i make something like a zora mask where it'll transform the user?

would it be something like
unit-a unit aqcuires an item
condition-item equal to (mask)
action-replace triggering unit with zora im confused!

thx for reading!


*new part*
i have also had some troubles on world editor when i load it up i get really far and forget to save
then a box comes up saying i need to close world editor off!

i'll copy what it says and put it on for help when i next get it

 

[DDRtists]

the reson it says that is that they protected the map so you couldent open it, that way you cant make cheats and stuff like that for it...

 

[ROBBYDOBBY]

ok