problem with my photopost pro

[majed]

hi all this is my photopost pro

http://www.kwtphoto.com/photos/

before every thing is ok the small thunbnails in generated auto

but now after i add photos this errors appeare to me

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Warning: exec() has been disabled for security reasons in /home/kwtphoto/public_html/photos/image-inc.php on line 61

Warning: exec() has been disabled for security reasons in /home/kwtphoto/public_html/photos/image-inc.php on line 61

Warning: exec() has been disabled for security reasons in /home/kwtphoto/public_html/photos/image-inc.php on line 61

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plz see the site

[Chuck S]

Your host has turned on safe mode and or disabled exec command

Try switching your image processor in global options to gd2 instead of imagemagick

If that does not work you will need to contact your host and have them turn off safe mode