First of all;
Welcome AboaRd,
pcj46!
Unfortunately, the original poster never replied anywhere that I know of.
Maybe I asked too many questions?
But that is pretty much a standard method of determining where and how to proceed. Fortunately, most people reply which really helps keep a "Help" forum going.
1. Would it be possible for you to post an image of the Imagery window? I'm assuming (again!!) that this is where you are seeing the blinking. BTW, instead of using the "Quick Reply" button, try the 'regular' "Reply" button under (and above) the list of posts on a page. There is a pop-up menu there that will let you select an image to upload with your reply.
2. Which version of WC are you using?
BTW #2: I assume "Mac OS 9.5" means "Mac OS
10.9.5". There
was an OS 9.5, but that was quite some time ago! We assume the Mac OS X will eventually progress past the "
10.x.x" version!
At least we seem to have stopped the redundant "Mac OS X 10..." madness!