Can't run maps[NEW INFO]
in the launcher screen it says entity [entity name] Leaked!
then at the bottom it says
LoadPortals: Couldn't load [map file location]
the weird thing is that at the end of the [cant load file] it says the file is in a .prt format but I saved it as a .vmf because that is the only choice I have for what to save it as.
If, however, you simply meant you closed a room that was previously open to the void, then sorry; I just had to make sure I'd drilled that down your throat. Now then, I'd recommend you look at the page on the VDC discussing leaks; it doesn't sound like you're too familiar with them, and you should be; they're you BEST friend. Not. Also, the .prt file is something completely separate from the .vmf file; don't worry about it too much.