Hi,
I had a problem on two WordPress 3.0.4 installations after updating from Absolute Privacy 1.3 to 2.0:
The plugin could not be activated because general-functions.php called in line 49 of /wp-content/plugins/absolute-privacy/absolute_privacy.php was missing. Renaming functions.php to general-functions.php in that folder solved the issue, tough, and Absolute Privacy is now running smoothly.
I'm not a developer so I don't know if something during installation did not work or anything else - I just thought I'll post it in case anyone else gets the same error.
Kind regards,
Felix