scrapper error issue

i have a scrapper and it is having issue of not grabbing thumbnail images correctly , it saves without jpg extension with 0 kb size and shows as broken image.... it is just a small fix so i need an expert

If it's just a small fix, why do you need an expert?
Post the code here if you're looking for help or in http://www.blackhatworld.com/blackhat-seo/f76-hire-freelancer/ if you're looking to hire someone to fix it for you.