Snowboard or something like that?

So. I'm a person who uses a lot of mods. Like, a LOT. And I've had this weird problem with Ice Cap where Sonic doesn't snowboard down the mountain. He just bonks into the wall like the other characters. I removed all my mods (that might've caused some problems behind the scenes), and I eventually figured out that it was Extra Character Slots causing the issue. What gives? Why do extra characters have to come at the cost of the sick ass snowboard intro? Much appreciated if anyone knows how to fix this and restore Sonic's Ice Cap to its former glory.