1. Take the sprites file out of YOUR (emphasis on YOUR) Apeiron folder.
2. Put it somewhere safe!
3 Take the Sprites and put them in YOUR Apeiron folder.
4 Read my "Read Me" (please)!
5 Open Apeiron.
6 Destroy the Romulans and dodge the Borg!
If mixing up YOUR Apeiron files with MY (Simpson) Apeiron files occurs it should have the Simpsons Icon on it, but if that is not so, then get the info (Command-I) on the files and it should say "Simpsons 1.0.0" in the comments section.