PhotoEditor failing to open some jpgs

Doing some long overdue archiving, I find that some of my jpgs cause an
'error reading file' message when I try to open them in PhotoEditor even
though they open fine in Picture and fax Viewer and Photoshop Elements.

At a first guess, it seems to be pictures from a Canon Powershot A630 that
have *not* been edited in PhotoshopE that are failing to be read by
PhotoEditor. Somehow I would have expected any problem to be found with
those that *had* been modified by a different programme, rather than this
way round.

Check this with a fresh picture from the camera, and PhotoEditor will not
open them. Don't know why I've not noticed this before: possibly because I
usually use my Sony camera which does not give this problem. Is it perhaps
the Canon 'properties' data sheet that is incompatible with PhotoEditor but
is understood by PElements?

Cheers,

S