Dropdown boxes in the ALTLVDS_RX megafunction are empty for Cyclone IV GX

All dropdown boxes in the ALTLVDS_RX megafunction are empty. No options are available.

To populate the ALTLVDS_RX dropdown boxes, perform the following steps:On page 2a of the MegaWizard Plug-In Manager, in the Which device family will you be using? box, select Stratix II GX.Click Next.On the Parameter Settings page, click the Receiver settings tab.Turn off Use "rx_cda_reset" input port.Click the General tab.Turn off Match project/default.In the Currently selected device family box, select Cyclone IV GX.The dropdown boxes are now populated.