A throwing of an exception has been added if an image is converted which has already been converted.
A throwing of an exception has been added if an image is converted which has already been converted.

eamoc/fifechan,andryblack/guichan,weimingtom/guichan,fifengine/fifechan,yetanotherindie/fifechan,wheybags/guichan,andryblack/guichan,wheybags/guichan,eamoc/fifechan,weimingtom/guichan,yetanotherindie/fifechan