As per title; once I have run the plug-in, regardless of whether I select "selected passage only" or "whole score", the message pops up saying "Number of noteheads changed: [the same amount that were to be changed]" so that's all well and good.
However, the result is that the noteheads look the same; there is no change at all, no note names inside them.
Could this be due to the unregistered version of Sibelius I am using? Does not being registered cause issues with plug ins? Has anyone experienced this problem before?
Thanks.