This may be a one off. I loaded 2.5.2.2 and continued a sequence that has been running for the last 4 weeks.
I ran the sequence from cold and it duly connected to all the hardware. It fired up PHD2 but it did not connect its devices, though the SGP log file says it did.
I noticed the error, aborted, reset the sequence, disconnected all the equipment, exited PHD2 and started again. It worked on the second try and went on to do 8 hours without issue.
I’ll look out for it next time and if it repeats, I will post both log files.