Friday evening I upgrade my WordPress installation to 3.0.1. Before this, there were no problems with image uploading at all. I have my uploads set to be categorized by year and month. Today, when attempting to upload an image, I received the following error message:
Unable to create directory /home/username/public_html/wp-content/uploads/2010/08. Is its parent directory writable by the server?
Folder permissions have not changed, but I am now unable to make any changes to the 2010 folder and sub-folders permissions. When I try to create an alternate location for uploads, such as /home/username/public_html/wp-uploads/, the same problem occurs. I am able to modify the directory permissions before attempting to upload, but as soon as I attempt to upload an image, I receive the above error and am no longer able to modify folder permissions at all.
I have tried downgrading back to 3.0, but the problem persists. I tried a manual upgrade to 3.0.1, deleting my wp-admin and wp-includes folders and uploading the fresh files, as the guide recommends.
I'm not sure what else to do.