I am currently trying to add a widget to the header area and have been using the instructions given via the 'Add a new Widget areas'. The problem is that every time I add even the basic minimum code to the Configure Header Area my entire site goes blank with only this message:

%pages %image
Fatal error: Call to undefined function: str_ireplace() ... on line 314

I am certian I am doing something silly that is causing this but I can not for the life of me figure out what.

Thanks for your help.

replace str_ireplace with str_replace in the file that the error message displays. This is fixed in Atahualpa 3.4.2. It's a PHP5 function that doesn't work in PHP4