There was some problems with the default naming on 1.8 with the name being more than 32 characters in a couple of menus. I've changed the defaults and added some error checking (as I didn't know about the limit) so if it does break, it still makes the menu with "
Invalid Name" as the title. This should fix the problems for anyone that can't use the GUI.
There was another problem which hasn't been pointed out yet (luckily) with sounds, colored messages, and particles on Craftbukkit. I've patched all of that up, so if you're using craftbukkit it will create a small smoke effect rather than crits.
Also, remember to use the proper sounds for your own version of spigot!
If anyone finds any other bugs, feel free to PM me or leave a reply in the discussion section. Please don't create reviews with 1 star because of a bug, I can and will fix things!

Enjoy the fixes!