Attachments to emails

Recently changed to Opera 10.50.
I have emails with photos attached which I received early February which  
were perfectly visible when I received them. I received another with  
photos in march but the photo cannot be seen. I checked the earlier photos  
and they cannot now be seen.
Nor can I save them to a folder. It goes thru the normal saving procedure  
but nothing is saved.
If I try to view them with a viewer I get:-
c:\users\myname\appdata\local\opera\cache\sesn\opr00001.tmpsen\ (+ 12  
subfolders) and "can't read file header".
If I try to view them with opera I get a small box with "image" in it.
I tried to send a file with an attachment to myself from opera and it  
worked perfectly but with the attachment forming part of the body of the  
email.
Where in the profile are attachments saved?
Daveh
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