I have a 2801 with 12.4(9)T5.
I have a standard config for custom NBAR, used across the entire customer estate that uses the following line..
ip nbar custom SMB tcp 445
On this IOS, I now get the error
% NBAR ERROR: Name is shorter than minimum of 4 characters
When did this "feature" of a minimum length for the name come in? I can find no reference to it anywhere. Is there a workaround, or is this the new ongoing standard?