
As soon as I do that, Windows becomes unusable for about 10 minutes (did not crash, just unable to do anything including opening the task manager -- mouse still moves, numlock still responds on USB keyboard)
- OS: Windows 7, 6GB of RAM, lots of swap
- Factorio was using about 2G of RAM just before the crash.
Screen shot at crash time: http://www.longdoan.com/~ld/Factorio/20 ... screen.png

It appears that the un-deconstruct planner causes Factorio to allocate so much memory that Windows swap out everything, and then is still unable to allocate it.
logfile
Game save just before the crash.Mods used:
Large filrerable chests: https://forums.factorio.com/forum/vie ... 14&t=13312
Electric boiler: https://forums.factorio.com/forum/vie ... 87&t=13381