Configurar PHP para acepatar cookies

[Ezpiki]

Cluster, es por ello por lo que no entiendo el error, tengo declarado el directorio para las sesiones:

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session.save_path = "C:\PHP\temp"

; Whether to use cookies.
session.use_cookies = 1

; This option enables administrators to make their users invulnerable to
; attacks which involve passing session ids in URLs; defaults to 0.
; session.use_only_cookies = 1

; Name of the session (used as cookie name).
session.name = PHPSESSID

; Initialize session on request startup.
session.auto_start = 0

; Lifetime in seconds of cookie or, if 0, until browser is restarted.
session.cookie_lifetime = 0

; The path for which the cookie is valid.
session.cookie_path = "C:\PHP\temp"

; The domain for which the cookie is valid.
session.cookie_domain = C:\PHP\temp
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No entiendo por qué me da ese error :(