Проблемы с arg_separator.output. Вот кусок php.ini
; The separator used in PHP generated URLs to separate arguments.
; Default is "&".
arg_separator.output = "&"
; List of separator(s) used by PHP to parse input URLs into variables.
; Default is "&".
; NOTE: Every character in this directive is considered as separator!
arg_separator.input = ";&"
При инстляции выдает ошибку arg_separator.output