RedPower Control items gone from server!

[Portalboy]

Title: RedPower Control items gone from server!

Version: 3.1.3

OS: Windows 7 x64

Java Version: Java 7

Description of Problem:

When spawning any items from RedPower Control, such as FORTH Boot Disks, Central Processing Units, Monitors Etc. on my server, I crash to the title screen. I can spawn them fine on SSP but on SMP they crash anyone who crafts or spawns them. Oddly enough, The IO Expander can still be placed, but disappears immediately, most likely because it isn't near a computer.

Error Messages:

N/A

Error Log:

N/A

[Backplague]

Have you properly updated both your client and the server?

[Portalboy]

Yes, they are both 3.1.3 with no problems. I checked the mods folder for the server and it indeed has the Control folder in the RedPower-All folder. Still, when the server loads, it appears not to have the items.