PHD2 pulse command failing

A few imaging sessions ago I encountered a problem with my guiding that I can’t seem to resolve (prior to this no problems and excellent guiding).

I began receiving the following error message in PHD2:

“PulseGuide command to mount has failed - guiding is likely to be ineffective”

I hadn’t changed anything in my equipment set up or software parameters. Also I don’t seem to receive the error message as soon as I start guiding but rather after a fairly lengthy period of time (approx. two hours into the last session). I have been unable to trace the source of the problem and have run out of ideas on how to resolve it…I have done the following:

  1. Replaced USB cables
  2. Replaced USB hub with a new one
  3. Reinstalled all drivers (camera and ASCOM)
  4. Reinstalled SGP (3.0.2.82) and PHD2 (2.6.5)
  5. Changed guide Camera (from lodestar to QHY)

Don’t know if anyone else has encountered this before but any suggestions on how to correct it would be appreciated. Thanks

What mount?

@bach, there’s a dedicated forum for PHD2 support: openphdguiding.org: Getting Help

Oh great…thanks Andy. I didn’t know about the PHD2 board, ill post the same message there.
Bob