Hey @JColvin,
Version 3.20.1 for Waveforms. I definitely have not grounded V+, but did ground V-. Picture below, and I did have V+ connected to the top leftmost pin when I started seeing the error. If I remove the ground from, V- I no longer see the error, but I could have sworn I have built and used circuits by connecting V+ to my Vdd pins and V- to ground before.. With the photo exactly as is I am getting the error.
I use it over USB but I have ordered my own 5V power supply as a backup.
Thanks for the help!