I’ve updated the Amazon plugin to work with WordPress 1.5. The plugin uses a class called “Snoopy” to connect to Amazon, and this, it turns out, as been added as a class in the core WordPress code. So when I redefined it in my plugin, it was causing a problem with the Dashboard, which was trying to reinclude the class. The fix (thanks to George for beating me to the punch on diagnosing the problem and sending in a fix) can be downloaded here. The changes included deleting the Snoopy class definition and requiring snoopy-class.php from wp-includes.