When trying to use the insert image functionality in Magento if you receive an error saying:
“The directory is not writable by server.”
Simply add a folder called wysiwyg in your root media folder and change the CHMOD to 777.
For some reason Magento doesn’t always automatically add the upload folder.
Hope this helps someone.
Thanks a lot. danvince
It works for uploading files to magenta media, according to your guideline.