Well I thought that was clear from my first post with the link I gave. So here it is again:
Comet Cache "free version" works fine with my Wordpress Multisite set up. Of course I wanted to make use of the extra functions, so I paid $139 for the Pro version. On install, the Pro version activates, but when I visit the plugin settings, I am unable to:
A: Enable the Cache
B: There is no SAVE BUTTON at the footer of the Comet Cache Pro settings page - so any changes made cannot be saved. This makes the Pro Version completely useless as it is.
From the link I had sent, one of your Mods commented: "It looks like you have another WordPress plugin installed that is introducing a conflict with Comet Cache." - So, if this is correct, it would be handy to know what plugins are known to affect the functioning of Comet Cache Pro - or, to help with working out what the problem is and how to fix it.