My apologies. This response is ridiculously late.
Anyways, unfortunately, there isn't really anything in particular that I've done out of the ordinary, as per my knowledge. I installed the software as I would with any other, and I ran it similarly.
As a side note, I did have a previous version of FamiStudio installed prior to installing the current version, but I doubt that has anything to do with my issue.
In any case, it's probably an issue with my computer, or something about how I set it up.
Once again, my apologies in regards to the heavily delayed reply. I'll update this post if anything else comes to mind.