black plague.. machine room bug

[Thomas]

If you are totally unpatched (meaning, no patches at all) you'll have to install one of the patches so that you can even finish the game, so I recomend you to do so right away!

Just want to clarify that it is very possible to finish it without installing a patch, the crash only happens if some doors are broken in a certain map.

That said, installing the patch is a very good idea since it fixes alot of stuff and in case the crash situation appears.

As for the strangeness, not sure what it might be. But have not heard of anybody reporting anything similar before. Even so, as Scraper said, if it is a bug then it should not cause any further problems.