Can't save a JPEG in PS CS 5

[sjm]

Running 10.13.6 on a MAC and still having problems with Photoshop CS 5. It will not save a jpeg. I have PS 5.5 and am curious if installing this might correct my problem. Also, it it possible that my PS 5 is corrupt and installing a from a different disc might fix the problem? Right now I have to save as a PS file, then re-open in PS 3 or ELEMENTS to save a JPEG. It's getting quite tiresome! Also, icon previews do not appear on my desktop.

[andrewrodney]

Not save in what way? Is there an error? Need a screen capture to see what's going on specifically.
You can always try resetting preferences, can't hurt.
Try trashing your Photoshop preferences. Press and hold Alt+Control+Shift (Windows) or Option+Command+Shift (Mac OS) immediately after launching Photoshop. You will be prompted to delete the current settings.

(Mac OS only) Open the Preferences folder in the Library folder, and drag the Adobe Photoshop CS Settings folder to the Trash.

This action only affects the items found in the preferences dialog box. Numerous program settings are stored in the Adobe Photoshop Preferences file, including general display options, file-saving options, performance options, cursor options, transparency options, type options, and options for plug‑ins and scratch disks. Brushes (and lots of other setting) are not affected by the above instructions for deleting preferences. You may wish to make a screen capture of the settings in the Preferences dialog to reset them prior to deleting of this file.

[sjm]

this is the alert when I try to save an image as a JPEG Screen Shot 2019-03-20 at 1.17.33 PM.png

[andrewrodney]

Did you delete preferences?
Only shows if you save JPEG, not say TIFF?

[sjm]

I discovered that PS CS 3 and an older ELEMENTS were still installed. I eliminated them and so far, PS CS 5 seems to be working properly. I am able to save all file formats. Keeping fingers crossed that the problem has been solved.