Not sure if this is to do with the FMP or not but I thought I'd start here and if I get redirected elsewhere I'll report it there.
Investigated a small sized UFO crash site (forgot to ID it, sorry) in a Skyranger and this is how the mission started. https://www.flickr.com/photos/57278801@N04/14767417444/
O_o
That's pretty cool.
But unlikely to do anything with the FMP.
Were you able to complete the mission? Do you have any other mods enabled? Are you using nightlies?
This looks a little bit lonely/mismatched after researching Alien Alloys Ammo...
I checked and it works fine to me. This means either of the two:
1) You're using an outdated version.
2) Somehow by upgrading to the newer version, something did not update properly. This sometimes happens with the research tree.
Either way, there's nothing I can do to fix this, because it's not broken. And it shouldn't break your campaign anyway.
Don't think this has been mentioned but I researched a floater corpse and got what looked like the the anti-grav research results instead of the floater autopsy results. Still have the option to research the antigrav though.
It looks like the antigrav module info takes precedence over the autopsy info, and only one item can be displayed after research is complete, even though both should be displayed. I moved the antigrav module ufopaedia trigger to antigrav armour, since it's not that jarring. A more solid solution would be to create a new research item, I'll experiment with it.