I got the mission to load, just had to restart (grr) the previous one. I have a feeling this issue is connected to some freezing issues I was having with one of the earlier missions. Reverting corrected that too. The conclusion I came to was the samegame files corrupting, as I got an error message after an attempted load. What is up with savegames corrupting? Is it anything to do with steam, or some serious bug BI overlooked?