That worked so it's not hypens per se.
I think it's something to do with how the file was saved. When I try to open the file that I've saved to Desktop in PS it gives the attached message. It does open in Irfanview though

Irene's file re-saved as jpg in Irfanview also attached.
Sorry to add to your thread gpixie for this
Irene - I will leave this file up until you've seen it and then will delete!