I get the same error. It happens when saving a score for a game I just installed. I double checked the install procedure, I'm pretty sure it's not something I missed.
Error Info
Zend_Db_Statement_Mysqli_Exception: Mysqli statement execute error : Data truncated for column 'score' at row 1 -...
As I was removing categories I decided not to use, I noticed that I'm getting a "No perms" error message when trying to play a game that doesn't belong to any category (IOW, to a category I just deleted). I just brought back the Other category and added all the games, no big deal.
I'm not sure...