No legend of unstable taxa after IterPCR

[Elena Cuesta Fidalgo]

Hello everybody, 

I have done an iterpcr as I always did before, using the command  pcrprune/>0;nelsen//

{0}; or pcrprune/>0;nelsen*/{0}; (when I want to say the tree). 

Thereafter, the outputs were always: 1) the reduced tree, with the alternative position of the unstable taxa on the tree (using letters),  and 2) a legend of this letter labels and which pruned taxa were represented with each letter label. 

But this week, every time that I did the IterPCR, the reduced tree is recovered, with labels (a, b, c...) on the alternative position of the unstable taxa on the tree...but no legends anywhere (normally it appears on the Output screen). Do you have any ideas what could be happened? 

thanks in advance!!