Thread:Extension talk:Semantic Forms Inputs/MW 1.18.1, SF 2.4.1, SFI 1.7.1 incompatibility? (datepicker)

Forms with datepicker cannot be loaded. I am getting the following PHP errors: PHP Notice: Undefined variable: wgLang in /SemanticFormsInputs/includes/SFI_DatePicker.php on line 177, referer: 

PHP Fatal error: Call to a member function getCode on a non-object in /SemanticFormsInputs/includes/SFI_DatePicker.php on line 177, referer:  I have commented out all other extensions except for Semantic Bundle extensions.

Running: MW 18.1, SF 2.4.1, SFI 1.7.1 and latest SVN update of other Semantic Bundle extensions