Trouble with opening pics

[Bduck]

I have been having issues when selecting to enlarge a posted pic, even my own. When selecting it goes thru a search mode displaying a very brief error 404 code then disappearing going back to search mode. I have no issue of posting pics, only enlarging whether its mine or someone else's. This was never an issue in the past. I usually use a windows operating system, it does the same on my wife's apple computer which I use on occasion. Both computers are updated & less than 1yr old. Is anyone else experiencing this issue? I'm not like the youngster's that is growing up into this computer world, I was not trained in computers therefore thrown into a must learn situation making me not very computer savvy but able to get thru some issues that arise.