I stumbled upon what seems to be a nasty bug in OC.
My character is Bard 4/Fighter 1, just got enough experience to level her up to level 6.
I wanted to give her "curse song", but it doesn't appear on the list of seletable feats.
I exported the character and startet MoTB to see if it workd there and I can select the feat there.
What's wrong?

Does you character meet the prerequisite? You need at least 3 Perform to make it available. What more you can't select if you level up in a class other than Bard. So when you want to level as a warrior, the feat won't be on the list. In your case you also need to wait for level 6, as this is the point where a non-warrior classes receive new feats.

Check me if I'm wrong, but that is character level six, not just "Bard 6". A Bard 4/Fighter 1 has 5 character levels, so they'll get a feat for being level 6 if their next level is a Bard level, and they'll have two feats to select if their next level is a Fighter level (one for hitting level 6, one for reaching Fighter-2).

You're right. :) But he won't get the feat unless he levels up as a Bard. This is a class feat and it's unavailable if the player decides to level up in a different class.

Ok, I re-loaded and it works now.
Thanks for help.

How do I mark this as solved? Somehow I don't see a button.