Hi Harry and welcome to the forum.
There seems to be a glitch recently. Often when I try to open an image I get a message that I should not link to it and must have a session ID (or something like that).
I just back click and try again. Most of the time it works on the second or third try.
Forum software is often not the simplest to change. The guys are working on it and I have noticed several little things here and there that they have fixed over the last few weeks.
Thanks for your patience and your interest.