I have a problem in that when I edit an assignment and go to Launch PDF editor,
a window (I assume it should be the launch window) appears for a microsecond, then disappears. Then if I click on the "Launch PDF editor" button a second time, the "Annotate PDF" window appears, and I can see the crosshair cursor, but it just stays that way indefinitely.
I thought that my server's gs (Ghostscript) wasn't set up properly. However a test on my ...mod/assign/feedback/editpdf/testgs.php reveals all is in order:
In both my Moodle 2.8.1 and Moodle 2.9.1 production sites, this feature exhibits the same behaviour. I am stumped. Anyone experienced the same thing?