Oh, hold on, you've installed WordPress without a database prefix? That can be problematic :( During restoration click on "Show advanced options (for experts)" and set a table prefix one to five letters/numbers followed by an underscore, e.g. wp_
If this doesn't help please check your database setup. Did you give the database user full privileges to the database, including the privilege to run UPDATE? The error message indicates that something in a run of the mill UPDATE statement didn't work. You can try running that by hand (through phpMyAdmin) and tell me what the actual error message by MySQL is?
Nicholas K. Dionysopoulos
Lead Developer and Director
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