Fatal Error message

[caustr01]

hey guys so I haven't been on my amnesia game for about 4 or 5 months and I decided to get back on and create my own custom story. I already had the editor and everything installed and never had issues with it before.
The game itself works fine but my editor isn't working at all.
When I click the level editor i get the message
'Fatal Error Could not load vertex buffer from mesh 'core_box.dae'


Ive tried deleting the editor and reinstalling it and this hasnt helped at all. I am updating amnesia right now but idk if that will make a difference.
Thanks!

update: the update did not work, it says the file is damaged. how to i uninstall and reinstall? I am using a mac

new update: restarted my computer and updated amnesia. deleted the editor suite and re downloaded it but still givin me the same error