My site (wp 351) worked fine and when I wanted to edit an image I got a broken thumbnail link. Switching of all plugins, moving them to plugin-old folder, suing the default them, it all made no difference. I still got the message: "Could not load the preview image. Please reload the page and try again."
After a lot of search on internet I found no solution. So I deleted all wp files, except wp-config and wp-content and reinstalled all files Run the wp-upgrade.php. the only change was that instead of a broken image link I no get nothing at all. Clicking on edit image returns nothing! This also happens when trying to edit a thumb from a nextgen gallery image.
I getting desperate and do not know what to do any more. Except may do another new wp installation and import the database from a backup and then reinstall all plug-ins 1 by 1 and test the image-edit function. But that again is a lot of work, and I will lose data.
Somebody please help me! (-:))
I run on a host with php 5.4.14, windows server with IIS-7
(It is not a memory issue.
Wordfence plugin test gives:
Current maximum memory configured in php.ini: 256M
Current memory usage: 14.00M
Setting max memory to 90M.
Starting memory benchmark. Seeing an error after this line is not unusual. Read the error carefully
to determine how much memory your host allows. We have requested 90 megabytes.
Completing test after benchmarking up to 80.25 megabytes.)