I read like 8 different topics on the leveling issue, so yes, I did research before posting this. I was at level 24, and had the "mission" level up requirement despite completing the SP storyline a long time ago. So, like one topic said, I uninstalled it, kept my save games, and reinstalled it, but did not install the patch. And I bought and sold a commodity and BAM, level 31. It was fixed! Horray!

Except once again, it has "mission" as the next level up requirement. How do I stop it from continually doing this? I am using the Speed mod with the latest version of Mod Loader, but I doubt that is causing it since when not using it I have the same problem. Originally all of a sudden I could not load my save games when running the mod after reinstalling, so I had to move them one folder up.