I'm running Moodle 2.9.1+
The course has a single SCORM module, for which the student has 100%, but the course total still shows up as 0.
The course is set to use simple weighted mean, so as I understand it, the module should be worth 100 points in the course total. For all the other students, the course grade matches the module grade as expected, so it must either be something that changed recently (I haven't changed anything, though there was a mishap that made the database unavailable for a few hours yesterday), or maybe it's something about this student (though again, no idea what that could even be).
In previous versions there was a way to force recalculation of grades (just in case maybe the database issue kept the total from updating properly somehow), but I can't seem to find it in 2.9, so for now I've "fixed" the problem by overriding the student's grade, but if there's any chance of this happening again in the future I'd like to deal with it now.