I have been experience what i believe is the same problem
Intermittently the plate solver does not execute.
1. The telescope skews to a target,
2. the image of the target is getting downloaded.
3. Platesolver never appears
Sometimes restarting the sequence works, sometimes I have to restart SGP, sometimes I require a full reboot
I have placed my log here
https://drive.google.com/folderview?id=0B91c8lY19utvOThmZWRZSnFUd1E&usp=sharing
sg_logfile_20160807002424
[8/7/2016 4:16:52 AM] [DEBUG] [Pier Flip Thread] Runtime terminating: True
[8/7/2016 4:16:52 AM] [DEBUG] [Main Thread] Meridian flip was user aborted...
I had to abort after the plate solver never showed up. Here's my guess on the relevant part of the log.
(just a guess)
I aborted and restarted the sequence and everytning worked fine
[8/7/2016 4:19:34 AM] [DEBUG] [Camera Thread] Display image preview using asynch task...
[8/7/2016 4:19:34 AM] [DEBUG] [Camera Thread] ---------> Save file took 194ms
[8/7/2016 4:19:34 AM] [DEBUG] [Camera Thread] SGM_CAMERA_PLATE_SOLVER_CAPTURE complete...
[8/7/2016 4:19:56 AM] [DEBUG] [PHD2 Listener Thread] PHD2 - No messages received from PHD2 for 1 minute, checking socket with status...
[8/7/2016 4:19:56 AM] [DEBUG] [PHD2 Listener Thread] Checking PHD2 state...
[8/7/2016 4:19:56 AM] [DEBUG] [PHD2 Listener Thread] PHD2 GetPhdStatus - Pre-Wait : Stopped
[8/7/2016 4:19:56 AM] [DEBUG] [PHD2 Listener Thread] Sending to PHD2:
{"method": "get_app_state", "id": 1001}
[8/7/2016 4:19:56 AM] [DEBUG] [PHD2 Listener Thread] PHD2 GetPhdStatus - Post-Wait: Stopped
[8/7/2016 4:20:57 AM] [DEBUG] [PHD2 Listener Thread] PHD2 - No messages received from PHD2 for 1 minute, checking socket with status...
[8/7/2016 4:20:57 AM] [DEBUG] [PHD2 Listener Thread] Checking PHD2 state...
[8/7/2016 4:20:57 AM] [DEBUG] [PHD2 Listener Thread] PHD2 GetPhdStatus - Pre-Wait : Stopped
[8/7/2016 4:20:57 AM] [DEBUG] [PHD2 Listener Thread] Sending to PHD2:
{"method": "get_app_state", "id": 1001}
[8/7/2016 4:20:57 AM] [DEBUG] [PHD2 Listener Thread] PHD2 GetPhdStatus - Post-Wait: Stopped
[8/7/2016 4:21:04 AM] [DEBUG] [Main Thread] Centering: User abort...
Running latest versions of SGP 2.5.1.17 , PHD 6.2 and the latest SBIG drivers.
Camera SBIG STT-8300 with the FGW filter wheel