Problem is that I've learned so far the Ice Form and the Ethereal shouts, but I can't seem to unlock them although I have 4 dragon souls. I hit the "Unlock" button (Default "R", I changed it to Right arrow), and the "Spend soul?" confirmation dialog appears, but when I click "Yes"...nothing happens, and the shout is still locked (as if I had just pressed "Cancel")....any suggestions or workarounds? thanks in advance

P.D: If you give me a workaround (aka, a console command), please also give me a command to "spend" the dragon soul, as I don't want to cheat or have advantages out of the console command in my first playthough...

Edit: OK, should have guessed that it didn't work because I changed the default key...I changed it back to "R", and I was able to unlock them. So you know, another bug to add to the list