Hi,
I am getting “Could not set that as the thumbnail image. Try a different attachment” error in wordpress when I set image as thumbnail.
I also noticed that, wordpress is not generating thumbnail
Please help.
Try regenerating your website thumbnails using this plugin: Regenerate Thumbnails. Some themes can mess with thumbnail settings and running this makes sure that the settings match again.
My problem solved. I looked at error logs and ftp. I noticed that images are resizing but their entry is not adding in database table. I check the error logs. There was an error while adding entry in database.
From phpmyadmin I found that database table was corrupted. I repaired it from phpmyadmin interface and now everything is working find.