[SOLVED] Newbie .lang file error

[Cruzore]

Might be wrong, but you seem to miss keyroom1 in the script. Also add OnStart().Also, you can just use asEntity and asItem in the UsedKeyOnDoor function. So basically:
void OnStart()
{
}
////////////////////////////
// Run when entering map

void OnEnter()
{
AddUseItemCallback("", "room101key", "room101", "UsedKeyOnDoor", true);
AddUseItemCallback("", "keyroom1", "thedooritopens", "UsedKeyOnDoor", true);
}

void UsedKeyOnDoor(string &in asItem, string &in asEntity)
{
SetSwingDoorLocked(asEntity, false, true);
PlaySoundAtEntity("", asEntity, "room101", 0, false);
RemoveItem(asItem);
}
This way, you save the whole function of the other key. And doesn't the true at AddUseItemCallback already destroy the item? No need for RemoveItem, as far as I know. Might want to switch the Callbacks from OnEnter to OnStart, but it depends on what exactly you wanted to do with it.
For the problem itself, those are the only things I noticed, and I might be wrong. Good luck

Edit: you seem to miss the extension for the sound file, too. So, it's unlock_door.snt.