Thread:Extension talk:CategoryBrowser/This extension is partially functional in MW 1.20+

I have this extension partially functional in MW 1.20+, but I had to comment out all instance of the following line:

wfLoadExtensionMessages( 'CategoryBrowser' );

This doesn't seem to harm functionality, but I have run into this error:

Notice: Undefined property: CB_CategoriesView::$collation in C:\xampp\htdocs\wtwiki\includes\CategoryViewer.php on line 213

Fatal error: Call to a member function getFirstLetter on a non-object in C:\xampp\htdocs\wtwiki\includes\CategoryViewer.php on line 213

This error occurs when attempting to see pages in a subcategory.