Unknown or unsupported file type

[Brijesh Kothari]

Hi,

I have installed Storytlr on my server I am using cPanel. It is installed successfully but when I try to upload an image I get the following error:

Unknown or unsupported file type (application/octet-stream)

#0 /home/soft/public_html/stor905/protected/application/admin/controllers/PostController.php(373): Files->fitWidth('3', 240, 'small')
#1 /home/soft/public_html/stor905/protected/application/admin/controllers/PostController.php(341): Admin_PostController->newItem(Array)
#2 /home/soft/public_html/stor905/protected/library/Zend/Controller/Action.php(513): Admin_PostController->submitAction()
#3 /home/soft/public_html/stor905/protected/library/Zend/Controller/Dispatcher/Standard.php(295): Zend_Controller_Action->dispatch('submitAction')
#4 /home/soft/public_html/stor905/protected/library/Zend/Controller/Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http))
#5 /home/soft/public_html/stor905/protected/application/Bootstrap.php(82): Zend_Controller_Front->dispatch()
#6 /home/soft/public_html/stor905/index.php(48): Bootstrap::run()
#7 {main}

Here are the steps to reproduce the error:
Login to Admin Panel -> Post -> Picture
When I upload an Image I get the above error.
I tried to upload .gif .jpg files but I get the errors
Has anyone faced this error ?
Please post an solution for this if anyone has solved this error.