Unable to export from DxO 5 after adding keywords to jpgs in PS

[johnbarrett]

I had some photos from my phone, had no camera with me. I have found the only way of geting keywords exported from DxO 5 is to use Photo Supreme then open the images in PL5 edit and export. I had some RAW ones that worked no problem this way but the jpg ones caused “unknown error” when trying to export.
I deleted in PL5, reloaded a new set via Photo Supreme and removed the keywords (which were added again by the program) before opening in PL5. But the keywords again were in PL5, I expect PL5 had kept the information in its data base. Again failure to export and again some RAW with keywords from Photo Supreme exported no problem.
Befor deleting in PL5 I deleted the keywords there and re imported and now no key words and they now export.
Any idea what I am doing wrong as RAW work doing this but clearly problems with jpg?