It may happen that when you right click on an image "Save image as" the internet explorer allow you to save images in BMP format and no other possible format!
- The solution is to empty the cache of your Internet browser!
- Clear the Internet cache or move the data if you do not want to lose them. To empty the cache Internet go to:
- Tools /Internet Options/General tab/'Temporary Internet files"
- Click on "Delete Files.."
- Close and re-open Internet Explorer.