Unable to scan for toys with iOS SDK 1.5.1

I just updated my project to 1.5.1, and I can’t scan for toys using .searchToys(). I have notification handlers set up for .toyScanSuccess, .toyConnectSuccess, and .toyConnectBreak, but I get nothing. I have logs on, but I only see:

[SDK]-Log: Invalid Token: Success!!!

I’m not sure what that means.