Views Slideshow alternating blank screens with content items
I found that the problem disappeared when I disabled the module "devel_themer." I began to suspect it only after looking at the dynamic code in Firebug, which showed the images trying to cycle and to cross-dissolve by animating transparency. I saw a lot of modified code referring to this module name, and figured that since it's not the native code that should be seen here, it would be worth trying the disable and see what happens. Problem apparently solved.