Modern Sonic Crashes Game When Selected

There has been a bug that whenever I select Modern Sonic when I also have the Shadow Extra abilities mod, the game crashes with the note "the game tried to access something it was not supposed to, and needs to be closed" or something like that. The same thing happens when I try to play as Modern Sonic while also having the Frontiers Sonic Cybertest Demo mod enabled. If there is any way to fix this, please let me know.