I have been fortunate enough to be able to download images that I intend to use for an upcoming website. However, after downloading them, they won't open when I double-click on the download(s). Some will, and some from other websites will open. This occurs with other downloads that I have from other sites occasionally as well. It is very frustrating and I'm just not knowledgeable to be able to go in and try and find, or fix, the problem(s). They've been downloaded as .jpg files and I have imported the ones I could open into their own folder. What's my issue?