If ThumbnailFile.file is set to None, don't try to wrap it in a File class. Fixes #121
If ThumbnailFile.file is set to None, don't try to wrap it in a File class. Fixes #121

Mactory/easy-thumbnails,siovene/easy-thumbnails,jrief/easy-thumbnails,jrief/easy-thumbnails,emschorsch/easy-thumbnails,sandow-digital/easy-thumbnails-cropman,jaddison/easy-thumbnails,SmileyChris/easy-thumbnails,emschorsch/easy-thumbnails,sandow-digital/easy-thumbnails-cropman