Andre - it is the last sentence that is key:
"The mount will perform a meridian flip when it is slewed to an object on the “opposite” side of this line"
If the line is in the wrong place, the mount will refuse to slew. I have had this in the past - where my line was a bit like the one in the picture. Since dragging the line to the meridian, happy days.
There are quite a few posts on at the moment laying issues at SGP's door when in likelihood, it has nothing to do with SGP but the other parts of an increasingly complex system.
I think it's fair to say in this case the title of this post may require editing.