When I fight the mummy boss at the end of the fight it will always consistently crash as soon as the fight ends. I have tried running the game several times with the suggestions provided on the support page with no luck. Below is the crash report. Every time it is the same type of crash, a problem with HydraManager.

characters/boss_mummy/boss_mummy.lua:421: Undeclared global "HydraManager"
stack traceback:
[1] [C]: in function error
[2] foundation/lua/util/strict.lua:32: in function __index
[3] characters/boss_mummy/boss_mummy.lua:421: in function on_death_notified
[4] lua/components/damage_receiver_component.lua:143: in function notify_death
[5] lua/components/base_damage_receiver_component.lua:220: in function update_slaves
[6] lua/components/base_damage_receiver_component.lua:126: in function update
[7] foundation/lua/component/component_manager.lua:209: in function update
[8] lua/states/state_game.lua:1258: in function update
[9] foundation/lua/util/state_machine.lua:145: in function update
[10] lua/boot/game.lua:912: in function update
[11] lua/boot/boot.lua:64:in function <lua/boot/boot.lua:60>

local_variables:
[2] t = table: 027B40C0, k = HydraManager, info = table: 47C1B7A0
[3] unit = [#ID[6611eb004964196e]], perk_id = the_undeath_of_khamun
[4] self = [DamageReceiverComponent instance 1], unit = [#ID[6611eb004964196e]], context = table: 47EB1920, hit = nil, actor = [Actor '#ID[4cd3f5c8]'] [1 #ID[6611eb004964196e]], settings = table: 2DBF3AA0
[5] self = [DamageReceiverComponent instance 1], entities = table: 3C087260, dt = 0.033318351954221725, unit = [#ID[6611eb004964196e]], context = table: 47EB1920, state = table: 47EB1220, previous_hitpoint_ratio = 0.00390625, hitpoint_ratio = 0, dirty_ratio = true, dirty_alive = true, actor = [Actor '#ID[4cd3f5c8]'] [1 #ID[6611eb004964196e]]
[6] self = [DamageReceiverComponent instance 1], dt = 0.033318351954221725, entity_manager = [EntityManager instance 1], master_entities = table: 3C087580, slave_entities = table: 3C087260, prediction_entities = table: 3C0844E0
[7] self = [ComponentManager instance 1], dt = 0.033318351954221725, _ = 23, index = 32, component = [DamageReceiverComponent instance 1]
[8] self = [StateGame instance 1], dt = 0.033318351954221725
[9] self = [StateMachine instance 1]
[10] self = <Game>, engine_dt = 0.033318351954221725, temp_pause = false, previous_game_time = 18556.479515938849, game_dt = 0.033318351954221725, state_machine = [StateMachine instance 1]
[11] dt = 0.033318351954221725
--- CPU
CPU: Intel(R) Core(TM) i7-4720HQ CPU @ 2.60GHz
Vendor: GenuineIntel
Logical processors: 8
Family: 0:6, Model: 3:12
Type: 0, Stepping: 3
Features: SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2
Feature bits:
EBX: 00000100 00010000 00001000 00000000
ECX: 01111111 11111010 11111011 10111111
EDX: 10111111 11101011 11111011 11111111
--- OS
Windows version 6.2 build 9200, 64 bit
Windows 8
--- Graphics
Graphics card: NVIDIA GeForce 930M (DirectX 11.0)
Graphics card: Intel(R) HD Graphics 4600 (DirectX 11.0)
Graphics card: Microsoft Basic Render Driver (DirectX 11.0)
--- Sound
No sound card detected.
--- Network
Network interface: Realtek PCIe GBE Family Controller (IPv4, IPv6)
Network interface: Microsoft Wi-Fi Direct Virtual Adapter (IPv4, IPv6)
Network interface: Microsoft Hosted Network Virtual Adapter (IPv4, IPv6)
Network interface: Qualcomm Atheros AR9485 Wireless Network Adapter (IPv4, IPv6)
Network interface: Microsoft Teredo Tunneling Adapter (IPv6)
Network interface: Microsoft ISATAP Adapter #5 (IPv6)
--- Input
Input device: Mouse (18.1): Mouse
Input device: Keyboard (19.4): Keyboard
Input device: Generic (17.0): 2.4G Wireless Mouse
Input device: Generic (17.0): ASUS Wireless Radio Control

Same Problem here. Searched the Steam-Forums, and WB's Support-Site: only reports, no fix or workaround so far.

Got the same problem crash every time with that boss, is there any way to skip him to continue the story mode

Where is the patch its not under my Collection gauntlet ?

Can't find it as well...? Got an update while i was playing it, the version-Nr. is now 1.0(A), before it was 1.0.
Repairing the installation might help if it shows a different version for you.

Thx just got the update as well :D