Really chuffed with this one:
==CHAOS INVASION CHANGES==

**Now all God armies spawned will be correctly led by generals of that god!
Tzeentch armies can be led by Lords of Change, Tzeentch Lords or Tzeentch Sorcerors.
Khorne Armies will be led by Exalted Bloodthirsters or Khorne lords.
etc etc.

Fixed a bug with Stage one of the invasion not correctly spawning Beastherds.
Sarothal's army will now always be a Tzeentch Force.

Fixed Ritual invasions.. (How did nobody notice this?!)

Fixed Pleasure cannon trails. (CA renamed hell_cannon to hellcannon?)

Finally got the chance to do a Norsca campaign! So it's changes related to that.
All challenger of the gods armies are now proper "God" armies with proper leaders.
The Norscan Chaos invasion (wether you fight it or not) now has god themed armies.

The final Norscan quest battle (the god challenger one) now has a full god army of whatever god it haappens to be!

UC Changelog:

Many, many changes to make it compatible with the Co-Op sub-mod.. but you won't see those.

CHANGES:
Slaanesh bonuses now affect the Mirror Guard ROR unit.

BALANCE:
Nurgle's afflitced increased melee attack from 6-9
Nurgles Afflicted increased melle defense from 4-6
Increased damage for Nurgle's Afflicted.
Cult Greatswords now do a small amount of AP damage.

TECHS REBALANCE:
Pledges of the dark gods now only increases lord rank by 1 instead of 2.
Pledges of the dark gods no longer grant reduced hero action cost.
Blessings of the dark gods no longer grants extra chaos corruption.
Magic item drop chance has been split between Pledges\Blessings\Unholy Techs.
Reduced corruption bonus from Rituals of Corruption.
Reduced bonus ranks from techs by 1 for units (all)
Armour bonus for daemns moved to Daemon tech.
Removed bonuses to lords and heroes from Aspirations to Greatness.

BUILDINGS REBALANCE:
Chaos main 2 now correctly provides some income.
Fallen knights are no longer recruited from the main, they have been moved to mauraders buildings 3.
Reduced corruption bonus from chaos mains.
Chosen now require mound of blades building to recruit.
Chaos cult 3 building no longer grants increased ranks to cultist units.
Reduced corruption from magic chain.
Moved hell forge to require chaos main 6.
Monsters chain no longer reduces upkeep from spawns.
Fixed upkeep rediuction for monsters chain.

BUG FIXES:
Fixed attrition values for Chaos Siege Engines.
Fixed pre-load descriptions for faction/leaders effects. (Requires CO-OP mod plugin)

FACTION CHANGES:
Archeon now grants 5 ward save to knights in his army instead of upkeep reduction.
Kohlek now grants +10 meele attack to Shaggoths.
Sigvald now grants +10 armour to lords and heroes.

Fixed issue with selecting new lords.
Fixed intro screen.
Added Ultimate Chaos invasion script. (Conflicts with other invasion scripts, only use one!!)

Okay guys here you go, Ultimate Chaos now works with Norsca!
It probably won't be perfect so feel free to do some testing, eveyrhting should be working except the chaos invasion script which I havent finished yet. So invasions will still be vanilla right now until I can get round to that.
Enjoy!

Still working on it.

Reduced ward save from the mark of tzeentch for caster units.
Reduced magic resistance from tzeentch magic resist ability
Increased cost of rot, glorious rot
Reduced upkeep (reduction) on daemons from campaign skillsets
Reduced upkeep (reduction)on god path units from campaign skills by 50%
Reduced daemon (reduction) upkeep from rifts by 50%.
Reduced global upkeep from weapons chain for units
Chaos Rifts (2nd Tier) now grant upkeep reducation on Forsaken/Chaos Spawn units.
Corrected battle kill buffing cultists etc so they do what thier tooltip actually says) melee attack instead of weapon damage)
Added a 'space' in that tooltip =p.
Fxied missing tooltip 'Stories'
Made changes that shoudl fix Daemon Recruitment times with the appropriate tech.

Fixes to the Chaos invasion script.