I cannot upload a login image or favicon in Ultimate Branding.

Ultimate Branding; GridMarket; Marketpress multisite.

Login Image: The "Browse" button does not work. I tried manually changing wordpress-login.png to logo.png and "save". No luck.

Favicons: I can use the "Browse" button, but tried many files and formats to upload from my desktop. It will not take my images.

I have an issue with the avatar plugin for profiles, and site categories icons; where I cannot upload images here. Maybe these issues are linked.