Quartus2 10.0 pin problem

Hi all

I am using Quartus2 10.0(web edition) on windows7 64 bit.

When I make a project and then run place and route, i get any "blan" pin, like the image i attached. But the fitting ends succesfully.

It is not related (only) to the sdram pins. Other i/o pins (like clock pins) give me the same strane thing.

Could anyone explain me why, and how could I resolve this problem?

best regards

Phate