Thread:Project:Support desk/ReflectionException: Class LanguageEn gb does not exist in includes\Init.php on line 16

mediawiki: 1.20.2 php: 5.3.8 mysql: 5.5.15

I get this error when first viewing /index.php prior to installation:

ReflectionException: Class LanguageEn_gb does not exist in includes\Init.php on line 16