On the latest release of the software, I was unable to talk to three PR8-24 boards that I confirmed worked on another system running a custom LabVIEW program.
I pulled commit #39220a563b58196cd3bcc8964163e1a2d761696a and installed "bin.AnyI2CSetup_v1.3.msi". The scan then worked and I was able to control the device.