Can see presets but can't select them (Lightroom Classic on the MacBook)

I installed Lightroom Classic presets I purchased on my MacBook.  Everything worked great until I renamed one of them.  Now, I cannot select any presets.  They displayed OK, but I can't select them.    I have tired shutting down Lightroom and restarting, and I have also shut down my MacBook and restarted.  Neither fixes the problem.    Any assistance would be appreciated.