Hi,
Windows 7 Ultimate, Acer laptop, ATI Radeon
I was using nightly builds up until Nov 25 2011. About Nov 28, I switched to Muton's builds and his update system and am currently fully updated to latest (Dec 2 2011 DEBUG build 1322763308).
Before this switch I had few if any crashes back main screen when attempting to load the battle screen at a mission site. I now have many such crashes (about half) and there is one at Budapest on the attached saved game that locks up so bad that I need Ctrl-Alt-Del and kill the game once I give the confirmation to "Enter". The CPU load jumps to 50%.
The common thread seems to be missions where a Harvester is involved. I have no trouble with UFOs I have shot down (I have not shot down a Harvester since this build switch). It is only the Terror, Harvesting, and UFO Landed missions that fail this way.
My November 30 post "Teleporting Dropship" is part of what has appeared as well. I have had two more of these since I reported that one. I believe that all of these were Harvester related.
danh