Started a new group and game bugs out every time I run an audition (stops at a gray screen and won't show idols). The first time I got it to rectify the issue by exiting, loading an autosave, and running the audition again. However, tried to do another audition and the same result with the blank gray screen w/no idols being shown.
Check this post, one of these should fix your issue https://itch.io/post/1064221
A little reticent to go with the first fix listed because if you asked to find something called Glitch Pitch on my computer, I would be searching for days since it does not exist. It is the same for anything to do with LocalLow or even something called Data in regards to the Idol Manager folder. Overly cautious, I guess.