HELP!!!!

[Darth_Octo]

I made a Tekkitmain server using Hamachi and the plugins are CraftBukkit 1.5.1,BukkitForge 1.5.1, and MCPC+ 1.5.1 and whenever I try getting something that is added by a tekkit mod out of NEI on the server it says "there is no such item with ID ####". Also when I try getting those same items out of creative it disappears when I place it, I am sure I installed everything right, so if you know what is going on please help!!!