I recently upgraded my AdRotate plugin from 2.1 to 2.2. After upgrade, I found that the ads were not showing up any more. I thought there might be some conflicts between plugins. I tried to de-activate and re-activate the plugin, but it didn’t help.
Checking the author’s web site and I found that the way to embed it in the php files has changed. The old way of embedding it is:
<?php adrotate_banner('1'); ?>
This does not work anymore in 2.2. You have to code it this way.
<?php echo adrotate_banner('1'); ?>