Re: ERROR 1005: Can't create table (errno: 150)

[Bug Me Not]

i have the same error in this case :

create table presupuestos
(
idpresupuesto INT NOT NULL AUTO_INCREMENT,
idcliente int not null,
idtarifa int not null,
iddireccion int,
nombre varchar(50) not null,
nif_cif varchar(50) not null,
direccion varchar(50),
fecha timestamp not null,
precio_total numeric(10,2) not null,
primary key (idpresupuesto),
index(idcliente),
foreign key(idcliente)references clientes(idcliente)ON DELETE CASCADE,
index(idtarifa),
foreign key(idtarifa)references tarifas(idtarifa)ON DELETE CASCADE,
index(iddireccion),
foreign key(iddireccion)references tipo_direccion(iddireccion)ON DELETE CASCADE
)
foreign keys are declared as INT NOT NULL AUTO_INCREMENT in their tables.
where is the problem?
thanks