Dual Purpose Pins - nCSO

Hello,

i have similiar problems with the ASDO and the nCSO Pin which is shown in the following picture (view the link)

ht tp://img63.imageshack.us/img63/7448/errormessagee.png

So there is no possibility to use this "pins as regular IOs"

(Assignments->Device->Deivce and Pin Options -> Dual-Purpose-Pins)

The pins can only used "as input tri-stated"

BUT: in another projekt i build, there isn't the problem with the both pins.

Has anabody an idea, which assumedly simple configuration point i have to chance?

Thank you

Dev.-Enviroment

FPGA: Cyclone2 - EP2C35F672C8

Quartus 9.1