2. If you are using Biomes O'Plenty, be sure that it is installed, then unzip the downloaded file and place the "BiomesOPlenty-PixelmonBiomePatcher.csv" file in the root Minecraft/server folder.
Might I recommend you change it to read something like:
2. If you are using Biomes O'Plenty, be sure that it is installed, then unzip the downloaded SpawnOfPsyduck.jar, navigate to "com/pqqqqq", and copy the "BiomesOPlenty-PixelmonBiomePatcher.csv" file found there to the root Minecraft/server folder.
That'll hopefully make it a bit clearer for those not too familiar with jars and their file structures.
Either way, thanks again for helping with this. It was starting to drive me nuts.