Plugin interference

The appointments + plugin is interfering with the Google Analyticator plugin.

When I activate google analyticator it will not allow me to enable the features of the plugin. When I disable appointments+ the plugin works fine.

One of the errors that pops up is "Fatal error: Cannot redeclare class Google_Exception in /wp-content/plugins/google-analyticator/google-api-php-client/src/Google_Client.php on line 407"

Does anyone else use these two plugins together? Is there a way to have both of these plugins active without them interfering with each other?

Thank you