LordHaart

Behavior = UnpauseSpecialPowerUpgrade ModuleTag_BlackRiderScreechEnabler
		SpecialPowerTemplate = SpecialAbilityScreech
		TriggeredBy = Upgrade_BlackRiderNazgulScreech
		ObeyRechageOnTrigger = Yes
	End

Thank you!It really works!

First of all, make sure that all abilities are listed in this line:

SynchronizeTimerOnSpecialPower	 = SpecialAbilityBlackRiderMorgulBlade SpecialAbilityScreech SpecialAbilityRingOfMen

If there's missing anything, add it.
Also you need to add the behaviors of each special power to both the mounted and the unmounted version, despite of that some abilities might be meant to be available for only one template.

1.Yes,all abilities listed in that line,exept passive abilities.
2.I copy all special powers from unmounted to mounted version.
3.Examle:

DISMOUNTED

;--------- SCREECH -----------------------------------------------------------------------------------
	 Behavior = UnpauseSpecialPowerUpgrade ModuleTag_BlackRiderScreechEnabler
		SpecialPowerTemplate = SpecialAbilityScreech
		TriggeredBy = Upgrade_BlackRiderNazgulScreech
	End
	Behavior = SpecialPowerModule ModuleTag_BlackRiderScreech					  
		SpecialPowerTemplate		= SpecialAbilityScreech
		UpdateModuleStartsAttack	= Yes
		StartsPaused			= Yes
	End
	Behavior = SpecialAbilityUpdate ModuleTag_BlackRiderScreechSAUpdate  
		SpecialPowerTemplate		= SpecialAbilityScreech
		UnpackTime					= 0  
		AwardXPForTriggering		= 0		
		TriggerSound				= NazgulScreech
		Instant						= Yes
		EffectRange					= 180
	End

MOUNTED

;--------- SCREECH -----------------------------------------------------------------------------------
	 Behavior = UnpauseSpecialPowerUpgrade ModuleTag_BlackRiderScreechEnabler
		SpecialPowerTemplate = SpecialAbilityScreech
		TriggeredBy = Upgrade_BlackRiderNazgulScreech
	End
	Behavior = SpecialPowerModule ModuleTag_BlackRiderScreech					  
		SpecialPowerTemplate		= SpecialAbilityScreech
		UpdateModuleStartsAttack	= Yes
		StartsPaused			= Yes
	End
	Behavior = SpecialAbilityUpdate ModuleTag_BlackRiderScreechSAUpdate  
		SpecialPowerTemplate		= SpecialAbilityScreech
		UnpackTime					= 0  
		AwardXPForTriggering		= 0		
		TriggerSound				= NazgulScreech
		Instant						= Yes
		EffectRange					= 180
	End

CommandSets for both version

Command_SpecialAbilityScreechBlackRider

And i still no result :(

Try to remember if you ever did anything to mess with the Ring Codes ( Ring function codes )

/ Fortress Codes / or theDroppedRing - crate codes

Tell me,where i can find this code?

You are using a MOD or the Pure game?

If a Mod see if it is the same with the pure (vanilla) game .
Make sure there are no mod files around to corrupt the pure game
Re-install if necc ..This should NEVER happen with a pure game

No,i use mod...my mod.I know code very well,but never seen such glitch