Stratix V Transceiver Reconfiguration issues

Exactly.

I use only a Stratix V, I cannot tell if with Arria V we could have the same issue. I mention before that the devices I have installed (for Quartus v12.1) are only for Stratix V and Arria V (it's a package), but I'm not using an Arria V.

But yesterday I've changed the parameter to another one (value just under the default one) and the Transceiver worked. When I put the value I wanted, the Transceiver stopped working and I had to reprogram the whole design (setting all the defaults values and resetting).

Had you already have this problem ?