Problem with FFT MegaCore function!!

Hi,

I try to use FFT IP Core but an error message appears " Unable to configure MegaCore Simulink block fft.....Re-install the MegaCore fft".

Is that anyone has had this problem?

I use: - Quartus II 13.0.1

- DSP Builder 13.0.1

- Matlab R2012b

- Stratix II as device

Thanks,

Arbaoui