After we updated to the new version. Our players cant damage anything when mounted ( Horse , heli , chair etc.. ) 

We use DynamicPVP too if that infomation matters. 

"RuleSets": [
    {
      "name": "default",
      "enabled": true,
      "defaultAllowDamage": false,
      "flags": "AuthorizedDamage, HumanNPCDamage, LockedBoxesImmortal, LockedDoorsImmortal, SelfDamage, TwigDamage",
      "rules": [
        "anything can hurt dispensers",
        "anything can hurt players",
        "players cannot hurt players",
        "anything can hurt traps",
        "players can hurt barricades",
        "anything can hurt heli",
        "anything can hurt npcs",
        "anything can hurt resources"
      ]
    },

you haven't allowed players to hurt anything

I'm having the same issue as this guy, my config is below.

{
  "Config Version": "2.0.2",
  "Default RuleSet": "main",
  "Configuration Options": {
    "handleDamage": true,
    "useZones": true
  },
  "Mappings": {
    "default": "main"
  },
  "Schedule": {
    "enabled": false,
    "useRealtime": false,
    "broadcast": false,
    "entries": []
  },
  "RuleSets": [
    {
      "name": "main",
      "enabled": true,
      "defaultAllowDamage": false,
      "flags": "SelfDamage, AuthorizedDamage, CupboardOwnership, NoHeliDamageQuarry, HumanNPCDamage, HeliDamageLocked, HumanNPCDamage, LockedBoxesImmortal, LockedDoorsImmortal, ProtectedSleepers, TrapsIgnorePlayers, TurretsIgnorePlayers, SamSitesIgnorePlayers",
      "rules": [
        "anything can hurt dispensers",
        "heli can hurt anything",
        "mini cannot hurt mini",
        "players cannot hurt players",
        "players cannot hurt traps",
        "players cannot hurt teslacoil",
        "players cannot hurt doors",
        "players cannot hurt buildings",
        "players cannot hurt deployables",
        "players cannot hurt storages",
        "players cannot hurt barricades",
        "players cannot hurt balloons",
        "players cannot hurt minicopter",
        "players cannot hurt samsite",
        "players cannot hurt horse",
        "players can hurt npcs",
        "players can hurt npcscientist",
        "players can hurt heli",
        "players can hurt npcmurderer",
        "players can hurt anything",
        "explosives cannot hurt players",
        "explosives cannot hurt storages",
        "explosives cannot hurt deployables",
        "explosives cannot hurt minicopter",
        "explosives cannot hurt horse",
        "traps cannot hurt players",
        "traps can hurt npcs",
        "teslacoil cannot hurt players",
        "teslacoil can hurt npcs",
        "barricades cannot hurt players",
        "highwalls cannot hurt players",
        "npcs can hurt players",
        "npcs can hurt npcs",
        "npcs can hurt npcmurderer",
        "npcs can hurt npcscientist",
        "npcscientist can hurt npcs",
        "npcscientist can hurt players",
        "npcscientist can hurt npcmurderer",
        "npcmurderer can hurt npcs",
        "npcmurderer can hurt players",
        "npcmurderer can hurt npcscientist",
        "fire cannot hurt players",
        "fire cannot hurt traps",
        "fire cannot hurt teslacoil",
        "fire cannot hurt doors",
        "fire cannot hurt buildings",
        "fire cannot hurt deployables",
        "fire cannot hurt storages",
        "fire cannot hurt minicopter",
        "fire can hurt npcs",
        "fire can hurt npcmurderer",
        "fire can hurt npcscientist",
        "anything can hurt resources",
        "anything cannot hurt samsite",
        "samsite cannot hurt minicopter",
        "samsite cannot hurt players",
        "samsite cannot hurt heli",
        "samsite cannot hurt balloons"
      ]
    }
  ],
  "Allow Killing Sleepers": false,
  "Entity Groups": [
    {
      "name": "deployables",
      "members": "mining.pumpjack, mining.quarry, mining.pumpjack, mining_quarry, miningquarry_static, pumpjack-static, small_refinery_static, furnace_static, refinery_small_deployed, planter.large.deployed, planter.small.deployed, furnace.large, furnace, generator.wind.scrap, electric.windmill.small, water_catcher_large, water_catcher_small, waterpurifier.deployed, waterstorage, waterbarrel, watchtower.wood, composter, water.catcher.small, water.catcher.large, water.barrel, large.furnace, vendingmachine.deployed, sleepingbag, sleepingbag.deployed abovegroundpool abovegroundpool.deployed paddlingpool paddlingpool.deployed",
      "exclusions": ""
    },
    {
      "name": "dispensers",
      "members": "BaseCorpse",
      "exclusions": ""
    },
    {
      "name": "minicopter",
      "members": "minicopter, minicopter.entity, scraptransporthelicopter",
      "exclusions": ""
    },
    {
      "name": "balloons",
      "members": "hotairballoon",
      "exclusions": ""
    },
    {
      "name": "samsite",
      "members": "sam_site_turret_deployed sam_static, samsite_static",
      "exclusions": ""
    },
    {
      "name": "explosives",
      "members": "explosive.satchel, explosive.timed, ammo.rocket.smoke, ammo.rocket.basic, ammo.rocket.hv, ammo.rocket.smoke, ammo.rocket.fire, ammo.rifle.incendiary, ammo.rifle.explosive, grenade.f1, grenade.beancan, ammo.grenadelauncher.he, ammo.shotgun.fire, arrow.fire, surveycharge",
      "exclusions": ""
    },
    {
      "name": "players",
      "members": "BasePlayer",
      "exclusions": ""
    },
    {
      "name": "traps",
      "members": "AutoTurret, BearTrap, FlameTurret, Landmine, GunTrap, ReactiveTarget, spikes.floor",
      "exclusions": ""
    },
    {
      "name": "teslacoil",
      "members": "TeslaCoil, teslacoil.deployed",
      "exclusions": ""
    },
    {
      "name": "barricades",
      "members": "Barricade",
      "exclusions": ""
    },
    {
      "name": "highwalls",
      "members": "wall.external.high.stone, wall.external.high.wood, gates.external.high.wood, gates.external.high.wood",
      "exclusions": ""
    },
    {
      "name": "heli",
      "members": "BaseHelicopter",
      "exclusions": ""
    },
    {
      "name": "doors",
      "members": "door.hinged.toptier, door.hinged.wood, door.hinged.metal, door.double.hinged.metal, door.double.hinged.toptier, door.double.hinged.wood, door.hinged.garage_a, floor.ladder.hatch",
      "exclusions": ""
    },
    {
      "name": "buildings",
      "members": "wall, wall.frame, wall.half, wall.low, wall.doorway, wall.frame.shopfront, wall.frame.shopfront.metal, wall.window, foundation, foundation, foundation.steps, foundation.triangle, floor.frame, floor.grill, floor, floor.triangle, wall.frame.garagedoor, wall.frame.fence, wall.frame.cell, wall.window.bars, shutter.metal.embrasure",
      "exclusions": ""
    },
    {
      "name": "horse",
      "members": "ridablehorse.entity, horse.entity, testridablehorse",
      "exclusions": ""
    },
    {
      "name": "npcs",
      "members": "NPCPlayerApex, BradleyAPC",
      "exclusions": ""
    },
    {
      "name": "npcscientist",
      "members": "ScientistNPC, scientist, ALLScientist",
      "exclusions": ""
    },
    {
      "name": "npcmurderer",
      "members": "Murderer, NPCMurderer, scarecrow",
      "exclusions": ""
    },
    {
      "name": "fire",
      "members": "FireBall, fireball_small, fireball_small_arrow, fireball_small_shotgun, flamethrower_fireball, flameturret_fireball, oilfireball2, oilfireballsmall",
      "exclusions": ""
    },
    {
      "name": "storages",
      "members": "box.wooden.large, woodbox_deployed, fridge.deployed, locker.deployed, cupboard.tool.deployed, coffin.storage",
      "exclusions": ""
    },
    {
      "name": "resources",
      "members": "ResourceEntity, TreeEntity, OreResourceEntity",
      "exclusions": ""
    }
  ]
}​

the same answer applies. you need to add rules that allow it. your current rules are blocking it

also you have way too many rules that are redundant, and the config is seriously bloated which is bad for performance

nivex

the same answer applies. you need to add rules that allow it. your current rules are blocking it

also you have way too many rules that are redundant, and the config is seriously bloated which is bad for performance

Isn't that what these rules do? Which am I missing?

        "players can hurt npcs",
        "players can hurt npcscientist",
        "players can hurt heli",
        "players can hurt npcmurderer",
        "players can hurt anything",

        "players cannot hurt balloons",
        "players cannot hurt minicopter",
        "players cannot hurt horse",

no, the rules contradict each other. this is explained in the documentation. these need to be changed from cannot to can. you will also need to use tpve.trace if you run into further issues to figure out what else is preventing the damage, if any

Hello nivex
Sorry to come with this as well, but I worked through it following your instructions here and tried everything, but once mounted you can't kill any Scientists.
I also did the debugging and it didn't find any errors.
What's even weirder is that I could kill boars without any problems, but the Scientists didn't work either. I have set the config like the others that player can't kill other player but everything can kill Scientists. Also I tried as you described with player can hurt mini, but that unfortunately did not work. And it's really only a problem when you're mounted, otherwise everything works as it should and I really love this mod. It would be enough for me if you could explain the logic of what is different in the background when a player is mounted than when he is without mini/horse. Then i can figure it out myself :)
Or if someone of the others can tell me if it worked for them, it would be cool to post it:) thank you so much!

it was fixed in 2.0.5. if it doesn't work then your config is blocking it. people having issues should be using the default config instead of trying to wing it :p

Oh crap, I didn't see the update! I'm so sorry!

lol no worries man :p