No problem
Well, I went through the first mission and here's what I found:
During the very first briefing, right before the actual mission briefing, I noticed two redundancies and one punctuation error.
I have been seeing this whenever Capella is mentioned, and I don't think it's necessary to call Capella "the Capella star" in the second portion of the briefing. The proper noun does not need to be used as an adjective. I guess that would be similar to saying the Sun star or the Sol star, or the Earth planet.
The second redundancy occurs on the 6th portion of the briefing. When using military time, it's not necessary to specify morning or evening since the 24-hour time is used to avoid any confusion between the two. So I believe it should be 1100 hours tomorrow, without the morning at the end.
Finally, I noticed on the same page that one sentence begins, "Squadron leader, Lt. Taine...." There needs to be a comma after Taine if I am not mistaken.
Enough of the picky stuff, here are some more crucial (if not less picky) findings:
During the actual mission briefing, the Disen is displayed as a cruiser. I don't remember if there is an icon for science vessels, so if there isn't disregard this finding.
After clicking on alpha wing, the 3D model is of a Hercules Mark II instead of the default Myrmidon used in the mission.
For the actual mission itself, the only things I noticed were the planet images and the Faustus' debris. The planets are fine, but I think I have seen the same planet in plenty of other missions used in the FS universe. The same goes for its Callisto-like satellite. If you would like, I can make a new planetary system for Regulus after Terran1 (and the main-sequence stars!!!) are finished. As for the Faustus debris, some of the pieces have rotation axes which are way off the debris' actual center of mass. In fact, the rotation axes extend outside the object. Maybe this has to do with the "no motion debris" flag, but it's something I noticed.
That's all from the first mission, I'll look through the next few missions when I get the chance.