The 360 degree rotation (which is a superb function to create rotating anaglyphs) creates 180 slices at incremental angles. The first and second slices seem to be the same except the first one has the shadow of where the menu was when launched the command, so this slice (number 1) should perhaps be deleted.
From Gabriel Landini:
Migrated-From: http://fiji.sc/bugzilla/show_bug.cgi?id=143