Originally Posted by poliocratos
I saw your discussion at the org. You all seemed to be moving toward the consensus that the file isn't loaded. This isn't true, but everything in it is heavily bugged, and in fact, the vanilla file won't activate most of the events.
To start from the beginning with the parameters listed in descr_disasters.txt, the event frequency can't be less than 2, or else the event won't activate. Of the events listed, earthquake, flood, and volcano definitely work in the imperial campaign (ignoring the reported flood movement bug). I haven't tested plague, but my guess would be that it probably works.
The trick with the file is that each event is picky about whether position, region, or climate is used to specify it. Volcano only works with the position statement (and will only do the full eruption if you set warning to false, otherwise the volcano just makes puffs of smoke). Earthquake will take climate or region IIRC. Flood will work best (flooding most often) with the region statement, but there will be occasional floods if you use climate.
The storm event does not seem to work in the imperial campaign, but does work in the prolog campaign. Whether any of the disaster events work in a provincial campaign, I don't know.
Regarding the disasters.tga file, I checked my Sysinternals Process Monitor logfile for RTW and it wasn't listed as loading, but I am not sure at this point if that logfile is complete or not. It should probably be redone to confirm.
If you really want to know how to mod this file, you should ask The Border Reiver, he has actually released mods for it.