DataMapper: error with capitalization

[eluser]WanWizard[/eluser]
I don't have a 1.8.1. running here anymore, so it's difficult to debug.

This is a common error though if you pass an object somewhere where there is no object supported, only a string. Objects contain a __toString() magic that will return the model name ucfirst() when cast to string.

So are you passing a 'sys_lookup' object somewhere in your code where you should pass the string 'sys_lookup'?