Good news and bad news.
The good news: I think you were right about the unparked mount being the problem. Last night the roof opened automatically at the start of the sequence. I guess unchecking the "Unpark on connect" option in the telescope driver did the trick.
The bad news: After opening the ROR, SGP proceeded directly to slew'n'center, skipping opening the Alnitak Flip-Flat. Watching things, I noticed that for some reason it didn't connect to the flip-flat?
Some relevant times:
[06/06/17 21:55:00.284][DEBUG] [Sequence Thread] Dome: Opening Shutter <-- ROR open
[06/06/17 21:55:51.262][DEBUG] [Sequence Thread] DoEventGroupChange: Centering on target <-- Centering start
[06/06/17 21:57:15.322][DEBUG] [Telescope Thread] MSG: Solve failed! User aborted. <-- I aborted the sequence since the Alnitak was closed
[06/06/17 21:57:35.911][DEBUG] [Main Thread] Connecting to Alnitak Flat Box <-- I manually connect SGP to the Alnitak (via the connect icon)
[06/06/17 21:57:38.303][DEBUG] [Main Thread] SetFlatBoxShutter: OPEN <-- I manually open the Alnitak via the SGP open button
(I resumed the sequence and things worked fine after this point)
sg_logfile_20170606215411.txt (714.2 KB)
SGF File.zip (8.5 KB)