Both destring and wipe are unchecked. Prime, suck, wipe, etc. entries are:
6, 6, 10, 75, 0.5, 0.5 in the destring box.
These settings previously produced retraction, in general, with seam hiding wipe unchecked but seam hiding destring checked. Unfortunately, when I unchecked seam hiding destring, all destring operations ceased.

Help >> About >> 1.4.5.10 Sep 2 2014