I also have this issue. From what I can tell this seems like a regression from the previous load error from last October. https://answers.ea.com/t5/Bug-Reports/Infinte-loading-in-Mission-9/m-p/9537871/highlight/true#M174
What I have tried:
restarted PC
attempted to load many times giving it a lot of time to load.
verify game integrity of steam install
uninstalled game as well as many other games to ensure the game is installed on different sector of the hard drive
no go.
EDIT:
I should have mentioned the video card I have is the AMD Radeon HD 7700 Series
I am albo facing this issue, after 8th mission 9th is not starting - music plays, the loading square is up but can wait endlessly for mission to start
