Custom entities stopped working.

[Spazatron]

I wanted a grunt without the grunt's music playing, so I opened the grunt in Model Editor and changed the settings so the music was gone, then saved it in a folder called "entities" inside of my custom story's folder, and it worked fine (showed in Level Editor fine and worked in-game too. But I closed the Level Editor and opened it again later on, and I get an error saying "Found some errors while loading file. Check log for details. File index out of bounds!", and the entities aren't showing in the Level Editor. So I went to the log and it says all sorts of errors like

Code: (Select All)

Inconsistency found in file entities/furniture/table_nice_wood01/table_nice_wood01.ent : no subtype Static in type StaticProp
Using type Entity <Entity> StaticProp for badly saved file entities/furniture/table_nice_wood01/table_nice_wood01.ent

but for pretty much every entity I've used (I think). What's wrong?