ID:1764117
 
(See the best response by LordAndrew.)
I have 506.1249, and my reference doesn't have any entries for the added database stuff. I recall this happening before when the 500 update came out, the matrix stuff wasn't in my reference then, but it somehow got updated.

Wondering why the reference wasn't updated?
Best response
Sounds like it might be this issue.
Yup, thanks for the help.