Problem with map rebuild.

[Meledictum]

I'm working on a DM map. Everything was OK, i was adding rooms, textures, static meshes, rebuilding and testing the map etc.
But now i'v got some serious problem:
When i open my map in UED and rebuild geomentry only - its OK. When i rebuild lightning only - its OK too. But when i Build All -well, it WAS OK. Now when i Build All the editor is crashing to desctop, i don't see any report about error or something like that. The Editor is crashing in the moment when i see in progress window "Illumination Occluding".

[}TCP{Tranquility]

this may be helpfull found on the wiki page

UnrealEd crashes when I try to build my map
This happens occasionaly, sometimes it is caused by something easily fixed and obviously wrong with BSP (like you made a surface antiportal when you needed a zone portal). If this is not the case, it can often be resolved by copying every actor and pasting it into a new file. Note that unrealEd offsets everything when you paste it, so you might want to correct this to keep everything on major gridlines. Also removing lights is known to help.

http://wiki.beyondunreal.com/wiki/Unreal_Mapping_FAQ

[Meledictum]

You could close the topic - i just loaded auto save and everything is OK now.