UPDATE 2: Nuckles87 here. I’ve finally gotten to what I believe is the fourth and last boost challenge of the main career mode, and the glitch is preset in that one two. This means that 3 of the 4 are affected.
UPDATE: Nuckles87 Says that this only affects the first two boost challenges.
New Wii U owners may not want to update too fast. It seems Sega’s first patch for Sonic and All Stars Racing Transformed has a glitch in it that stops all boost challenges from having checkpoints. Leaving you with no other choice but to fail the mission, which leaves you stuck. However, there are some ways around it.
Play while it’s updating and finish the challenge. There’s no guarantee that there won’t be another glitched challenge, but it will get you past that. Editor Nuckles87 has discovered that if you fail the mission four times on easy, it will let you pass to the next challenge.
If you just got your brand new Wii U, I’d recommend holding off on doing the system update until this game breaking issue gets a new patch of its own.