I completely fixed the generator, and now it is extremely optimized. Please update to this version as soon as you can, because it now includes a lot of bug fixes, and it contains support for the latest Pokemon Essentials.
This was a pain to change, but I finally got it compatible with Pokemon Essentials 18. When you start up the program now, you will see a launcher, if you want to use the old one, select Pokemon Essentials 17. If you want to use the new one, select Pokemon Essentials 18. Enjoy!