unfortunately the log wasn't kept, but I will describe it as best I can.
forge mod preloading sequence it loaded several mods but then got to Extended Slabs and said fatal error and went into a loop where it didn't fully crash it just kept trying to reload.

Other mods in the server

Biomes o Plenty
Bountiful
Corail Tombstone
Double Doors
Fast Leaf Decay
Hwyla
Iron Chests
JourneyMap
JEI
Kottle
Macaw’s Furniture
Macaw’s Bridges
Macaw’s Windows
Macaw’s Roofs
MixinBoostrap
Morpheus
Neat
Pam’s HarvestCraft 2 – Crops
Pam’s HarvestCraft 2 – Trees
Pam’s HarvestCraft 2 – Food Core
Phosphor
Waystones
Botany Pots
Bookshelf
Double Slabs
Torch Slabs

#2 has more Information including a Crash Log. Proceeding to close this.
Thanks for the Information but for more info please go to #2.