GThumb not displays jpg images

[Cosmical]

As I've specifyed in the title: just gthumb image viewer stoped to display images with .jpg extension Furthermore images with another extentions (jpeg, bmp) are still displaying normally, I can view the mp3, mp4, wmv, avi icons and thumbnails, but jpg are not. Now I've tryed some straight methods:

• Changes all possible combinations in gthumb preferences;
• Restart gthumb;
• Restart Ubuntu at whole (!)

It's no effect!

• find ~ -name '*gthumb*'
• Delete them all;
• Restart gthumb;

It's without effect too!

And even radical method:

• sudo apt-get purge gthumb;
• sudo apt-get install gthumb;

It's unsuccessful!

A most mysterious in that there is normal gthumb behaviour in other users sessions at the same machine

[Cosmical]

Eurica!

rm -r /home/antony/.local/share/mime/
sudo cp -r /home/vikky/.local/share/mime /home/antony/.local/share/
sudo chown -R antony /home/antony/.local/share/mime
sudo chgrp -R antony /home/antony/.local/share/mime

In case when you'd have not a valid mime directory - I'd attached one.

Thanks!