When trying to edit and image, with eZ Image Editor, I get the error message that "The image is not loaded because of a server error.". This was tested with, and without, imagemagick.

I've user firebug to get the ajax error, and the error messages were:

GET http://<IP>/ezwebin_site_admin/ezie/prepare/60/eng-GB/227/2 500 Internal Server Error 1.5s

Fatal error: Class 'ezcImageFilter' not found in /var/www/apache2php53/ezp/app/ezpublish_testsystem/.run/extension/ezie/classes/image_tool_resize.php on line 22
503 Service Unavailable<b>Fatal error</b>: The web server did not finish its request<br/><p>The execution of eZ Publish was abruptly ended, the debug output is present below.</p><div id="debug"><h2>eZ debug</h2><style type='text/css'>

Steps to reproduce

1. Log in as admin on plain admin
2. Click on the "Media" tab
3. Click on the "Image" folder in the sub-items list
4. Click on "Create here"
5. Choose "Image" from the drop down list
6. Fill in with the following:
	Name: "TC-138"
	Caption: leave blank
	Image: <image for your HD>

7. Click on "Send for publishing" button
8. Click on "TC-138" link
9. Click on "Edit" button
10. Click on "Edit" button on the Image section
11. Popup rises with "The image is not loaded because of a server error."