I seem to be getting a lot of errors on one particular page whereas other pages are fine.
I noticed that in the warning the file is referenced as .gif (lowercase) and the warning says that it is not a valid GIF (uppercase). The same thing with the jpg warning below.
Could this be the reason for the warnings? Its just a guess since I know nothing about coding.
Warning: imagecreatefromgif() [function.imagecreatefromgif]: '/home/persoob6/public_html/wp-content/uploads/2012/03/smurf.gif' is not a valid GIF file in /home/persoob6/public_html/wp-content/plugins/autonav/autonav-wl.php on line 109
Warning: imagecreatefromjpeg() [function.imagecreatefromjpeg]: '/home/persoob6/public_html/wp-content/uploads/2010/04/cat.jpg' is not a valid JPEG file in /home/persoob6/public_html/wp-content/plugins/autonav/autonav-wl.php on line 103