I'm using the marekkis watermark plugin on two wordpress installations both with the photacrati theme, one on windows and the other on apache servers.
The one on the apache server is working correctly. The one on windows won't let me configure the watermark. I enter the values on the settings page but when I save or preview it logs me out of wordpress and takes me to the login page.
I have uninstalled the plugin and reistalled it several times and can't figure out what to do to make it work. Can you help?