You need to increase the amount of PermGen you have on your server. If you rent a server you will need to ask the support team to do so for you.
If you are running it on your computer, or something, you will need the following argument:
-Xmx4G -XX:MaxPermSize=256m
As that will give it 4gb of ram and double the PermGen size.
That is a minimum though, you may need 512mb, but try 256 first
[DOUBLEPOST=1413226109][/DOUBLEPOST]
The planter? Pardon my ignorance, but it has been a fair amount of time since I actually looked at this pack
I know I force both blood magic and pneumaticcraft when you make the auto-spawner... but I can't remember the planter
Heck, I need to update the scripts on this pack, I kept updating them on the server I played on, but not here... they were my test group