ImageMagik path problem

My hosting provider is adamant that the path to ImageMagik is /usr/local/bin, so that is what I have in my settings page. However, when I try "Test" I get this in return:

Omeka has encountered an error

Omeka_File_Derivative_Exception
Failed to execute command: /usr/local/bin/convert -version.

#0 /home/xxxxxx/public_html/om/omeka-2.1.4/application/libraries/Omeka/File/Derivative/Image/Creator.php(269): Omeka_File_Derivative_Image_Creator::executeCommand('/usr/local/bin/...', NULL, NULL, NULL)
#1 /home/xxxxxx/public_html/om/omeka-2.1.4/application/controllers/SettingsController.php(173): Omeka_File_Derivative_Image_Creator::isValidImageMagickPath('/usr/local/bin/')
#2 /home/xxxxxx/public_html/om/omeka-2.1.4/application/libraries/Zend/Controller/Action.php(516): SettingsController->checkImagemagickAction()
#3 /home/xxxxxx/public_html/om/omeka-2.1.4/application/libraries/Zend/Controller/Dispatcher/Standard.php(308): Zend_Controller_Action->dispatch('checkImagemagic...')
#4 /home/xxxxxx/public_html/om/omeka-2.1.4/application/libraries/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#5 /home/xxxxxx/public_html/om/omeka-2.1.4/application/libraries/Zend/Application/Bootstrap/Bootstrap.php(97): Zend_Controller_Front->dispatch()
#6 /home/xxxxxx/public_html/om/omeka-2.1.4/application/libraries/Zend/Application.php(366): Zend_Application_Bootstrap_Bootstrap->run()
#7 /home/xxxxxx/public_html/om/omeka-2.1.4/application/libraries/Omeka/Application.php(79): Zend_Application->run()
#8 /home/xxxxxx/public_html/om/omeka-2.1.4/admin/index.php(28): Omeka_Application->run()
#9 {main}

Any ideas?