Kan ikke bruge GD Lib i en 777 mappe?

Hej

Hvorfor kan jeg ikke bruge GD Lib i en mappe som er sat til 777 hvis jeg tager et billede fra en anden mappe så vil den godt :(

Denne fejl får jeg please hjælp mig....

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Warning: Cannot add header information - headers already sent by (output started at /web/www.mopedpower.dk/www/gallerisystem/scooter_img.php:50) in /web/www.mopedpower.dk/www/gallerisystem/scooter_img.php on line 87

Warning: imagejpeg(): supplied argument is not a valid Image resource in /web/www.mopedpower.dk/www/gallerisystem/scooter_img.php on line 88

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