I have the Campaign Monitor add-on installed, and there were no errors during plugin activation - I even deleted, re-downloaded from the Gravity site, then re-uploaded to my site but that did not resolve this problem.
When I go to the Settings -> Campaign Monitor page, the body of the page under the Campaign Monitor title is blank. Looking at the html source, it cuts off right after the title.
When I go to the Campaign Monitor menu item under Forms and click "add new" I get the same thing.
My Gravity forms installation settings are:
PHP Version 5.2.17
MySQL Version 5.1.49
WordPress Version 3.0.4
Gravity Forms Version 1.4.5
Gravity Forms itself seems to be working fine. Any ideas?