0:25 - Pluto has an eyelash glitch for 1 frame

0:26 - Scootaloo's eyes are bigger than her eyelids on 2 frames

3:13 - Candy Mane and the Male Painter pony are blank flanks.

3:21 - RD's wing is disonnected on 1 frame

3:25 - Dizzy Twister has an extra ear that overlaps her eye a little bit.

3:51 - Twi's foreleg looks disjointed for several frames.

4:13 - We aren't seeing the fourth elderly pony for some reason, even though we really should.

4:33/4:36 - RD Xtra Ilashes

4:49 - Tsk tsk, reusing crowd shots of Season 1, are we? (Blank flanks)

6:06/6:46 - Snips' shirt is missing the RD inside the heart

6:38-7:20 - The megaphone on the balloon repositions itself several times.

6:47 - During the scene transition, the book goes from the filly's hoof to her mouth.

6:51 - RD looks like a blank flank, although it's debatable.

7:06 - Inner thigh cutie mark and a slightly disjointed hind leg on 1 frame. Also, the balloon's basket is missing its star.

8:23 - The brown pony in the cart teleports from the back, to the front, then to the back again.

9:30 - DOUBLE RAINBOW DASH...cutie marks.

10:08 - Rainbow has her pre-season 1 cutie mark (bolt with no cloud) AND is missing her wings.

10:20 - Rainbow's wings are reversed

10:35 - 2 Blank Flanks.

*11:15 - Rainbow DERP

11:18 - The statue on the camera left has it's head slightly cut off by an invisible layer.

11:51 - RD's a blank flank for a few frames, then her cutie mark pops out of nowhere.

13:02 - RD's wings are missing

*13:05 - This one isn't really an animation error, but Rarity keeps one of her hind legs up for some reason...

13:29/:32 - RD Xtra Ilashes

13:49 - Left eye oversight for 1 frame.

13:57 - And now a right eye oversight that's visible for 3 frames!

14:29 - Think I didn't see that inner thigh cutie mark, animators? THINK AGAIN.

15:49 - I see that inner thigh cutie mark too.

15:50 - RD Xtra Ilashes

16:16 - Lyra appears to become a blank flank as she moves away, but extremely close examination reveals that her cutie mark is simply really, REALLY difficult to see (It's thin), and as such still counts as an error.

16:28 - As RD changes pose on the cloud, her wings are missing.

16:51 - RD Xtra Ilashes that are also disjointed.

17:28 - It looks as if Scootaloo still has her "side profile" mane on, except she's walking in 3/4 back. Either that, or she has 2 manes.

17:52 - No one's actually holding the sign on the (camera) left.

17:58 - The sign Mare Do Well jumped through lost its texture (Ex. The Mare Do Well face) 

18:45 - BLANK FLANK

19:02 - RD throws away Pinkie's mask, but later at 19:21, the mask respawned on Pinkie anyway.

21:17 - The outline of Pinkie's mane slightly overlays some of her foreleg.