[SOLVED] "The directory is not writable by server" Magento CMS upload image
This has a very simple fix, basicly 1 step:
Go to media folder that is located in the root of magento and look if you have a folder called wysiwyg ...if you don't have, you need to create one.
Add folder permissions 0777.
Adding the folder wysiwyg should fix this "The directory is not writable by server" error that apears when you try to upload images for the cms side of magento.