I am also having the green screen problem using events manager. The google map shows up correctly in my dashboard , but not on the web.
Also, The “details” info typed into the new event page on dashboard does not show up on events page.
Here are my specs:
Server version: 5.0.77-community
MySQL client version: 4.1.22
PHP version 5.2.6
WP Version 2.9.1
Events Manager 2.0rc2
Picture Perfect Theme 1.1