Jpeg file not recognised [2019]

[Anairb]

I am having a VERY frustrating time. I am saving a PSD file as a Jpeg. When I try to open it in the programme (Bookwright) it says that it is an 'unsupported file format' and that it must be a jpeg or png. It is a jpeg, and I have just saved it from the PSD file. And, as well as this, I have previously saved the same photo as a jpeg and it opened just fine. I had to correct a colour balance, so I went back to the original. So, I went back to the original PSD again, corrected the flaw, saved as a jpeg - and, once again even Photoshop is failing to recognise it!  It's greyed out in the list of files.  I have now gone through this process three times, checking every setting, but no dice.
Has anybody got any solution?

[Derek Cross]

Which version of Photoshop and OS?

Is it just happening with this one PSD file or does it happen every time you try and save a PSD as JPG?

Are you saving your PSD to JPG like this:

File > Save As, and then selecting JPG from the drop-down Format menu?

[Anairb]

It's the Creative Cloud up-to-date version.

Yes, it is only happening with this file, which I have worked on and saved before.

Yes, that is the way I have saved it.

I have had to solve the problem (I'm in rather a hurry...) by opening the PSD in Affinity Photo, doing the corrections, exporting the file as a Jpeg, and, as they say Bob's your Auntie - no problems.  But, as I don't want to do all this work in Photo, I would still like to know why Photoshop has gone rogue on me.

A bit of background - I have saved 80 other similar Psd's as Jpegs with no problem, including this particular one.

[Derek Cross]

Must have been a corruption on this particular JPG. When you do a lot of work on one image it's worth saving it as a Save As and giving it an incremental name.

[Anairb]

I always do. I did it with this one the first time around, with no problems.  I expect it will remain A Photoshop Mystery...

Thanks for the help.

[Derek Cross]

Yup.

[jane-e]

Hi

As I understand it (correct me if I’m wrong), the first time you save the jpeg from the psd, you can open it again, but subsequent saves give you an error message?

If that is correct, then confirm you are selecting jpeg as the format and not simply clicking on the filename with the jpeg extension that you are trying to replace. Doing so will create a psd with a jpeg extension and will yield the error message you say you are getting.

This may not be happening, but it’s worth checking and ruling out.

~ Jane

[Anairb]

Thanks, Jane,
No - I have saved, so far, more than 150 photos as Jpegs in order to place them in my book. This is the first time that this has happened. It is mysterious, as, even if I go back to the original PSD, and save as a jpeg (and i can confirm that I am "selecting jpeg as the format and not simply clicking on the filename with the jpeg extension that you are trying to replace"), it still fails to be recognised. I have gone on to do the same with at least a dozen subsequent photos with no problem, and, as I have stated above, I finally solved my immediate problem by opening the file in Affinity Photo, saving as a jpeg, and it is happily now resident in my book. I have tried each of the methods so generously suggested by other in this thread - unfortunately none have worked. As I have previously been able to save this particular photo as a jpeg and place it in the book, this will just have to remain a mystery.

[Norman Sanders]

Only happens with this psd file? If so:

Try to open the jpg file via your Browser. If you can, save it with a slightly different fine name as a jpg to create a new header. Then try to open the newly named file in Photoshop. 

[Anairb]

Thanks, Norman,

Tried this - sadly it just brought the same result.  See my reply to Jane.

[sharp_hands16B8]

There are also some programs that will have conflicts with JPEGs that contain image modes that it can't read. For example if it's in CMYK or ProPhoto RGB, etc. If there is anything used in the encoding of hte JPEG that your destination program doesn't understand it may not accept the file.

[Anairb]

Thanks, Mark,

The file is saved in the same way that more than 150 other photos have been saved. See my reply to Jane.

[Anairb · Accepted solution]

My thanks to all you generous people who have tried to help me with this great mystery. I expect the moral of the story is to always have an alternative programme...
Photoshop remains, for me, one of the All-Time Great software programmes - if only I had had access to it when I was a young theatre photographer in the 60s and 70s...