problema con el setup

[satsiglo2]

cuando el setup termina de pedirme todos lo parametros dice.
Use of uninitialized value in getgrnam at ./ispcp-setup line 1112, <STDIN> line 14.
Use of uninitialized value in concatenation (.) or string at ./ispcp-setup line 1115, <STDIN> line 14.
Use of uninitialized value in concatenation (.) or string at ./ispcp-setup line 1115, <STDIN> line 14.
ERROR: External command ' ' returned '255' status !


por favor ayuda