1. Check within IIS | Sites | Default Web site | PMAdmin | IIS | HTTP Response Headers on the Password Manager server the "HTTP Response Headers" the X-Frame-Options may have a value of "deny". Set the X-Frame-Options value to the default setting of " SAMEORIGIN" and restarted IIS. (see screen shot)
2. If using Internet Explorer (IE) when trying to change Company logo, try to use Chrome or Firefox when trying to change logo.
3. Make sure the image is a .png with transparency. You may have to use photoshop since there isn't an easy way to do it with Paint.