: The weirdest thing that has ever happend to me in forge was when I was
: mapping a lovely map some year ago. It was quite complex, with lots of
: polygons. The views got rather complicated (but it was ok...alephone), and
: as normal I looked in the wrong direction, forged crashed (too many
: polygons in view). This was normal though, happend a lot of times. Thing
: was, when I restarted forge and opened the map, all polygons were gone,
: and the map name was something very weird. It seemed like forge had bugged
: out totally and corrupted if not eaten up my map.
That has happend to me as well. I got the map back though, not exactly sure how but I know sometimes merging can fix things. And make sure you don't save when the map file opens with no polys and just restart the computer.
Also, this is probably ridiculous but I'll just throw it out there, make sure you are using the latest version of Forge(1.0.3). The link to it on source.bungie.org is apparently broken but you might be able to find it on the archives, or I can send it to you if you don't have it.