After talking with Jason, and searching through phpMyAdmin, I found that the table {PREFIX}session had not been created.
Jason gave me this SQL Querey:
CREATE TABLE IF NOT EXISTS `modx_session` (
`id` varchar(32) NOT NULL,
`access` int(20) unsigned default NULL,
`data` text,
PRIMARY KEY (`id`)
) ENGINE=MyISAM;
remember to change `modx_session` to reflect your {PREFIX} if you use something other than modx_.
After that, I deleted all the cache files in /core/cache/ and everything works slick now
-sD-
Dr. Scotty Delicious, Scientist.