i'm having this same problem but the mods that i'm "missing" are
Mod_Forestry 1.2.6.4
mod_IC2 v1.70
mod_railcraftFactory 3.3.1
mod_railcraftBuildcraft 3.3.1
mod_railcraftAutomation 3.3.1
mod_railcraftExtras 3.3.1
mod_railcraftInfrastructure 3.3.1
mod_railcraftIC2 3.3.1
mod_railcraftRails 3.3.1
mod_railcraftCore 3.3.1
yet the server hasnt changed since yesterday, nor has anything I have done, i did update recently but that what just the tekkit update