A TimThumb error has occured

The following error(s) occured:

The remote file is not a valid image. Mimetype = ''E:\Website\Dvbcn\wp-content\themes\skin\cache\tim67DC.tmp

Query String : src=http://vod.dvbcn.com/cb51ef50cffc4195bd1a874c33a9ec38/covers/e35cb0fa66ed475ca554b299a1de5b11-00002.jpg&h=428&w=760&zc=1
TimThumb version : 2.8.13