frapi/frapi — pull request #142 by pjfontillas (2012-04-27 22:32:28+00:00)
Title: When mime types are empty set values to null instead of false.

Same thing for outputFormat. Later in /library/Frapi/Output.php we use isset() to check the value.
Technically the boolean false counts as the value being set, so we end up with a "Class 'Frapi_Output_' not found" error.

I don't think there are any conditional statements checking for boolean values anywhere else but please correct me if I'm wrong.