Hey ,
There are a lot of warnings and errors within your project. Please focus on correcting the errors first. The errors below seem to indicate that these structures are unknown.
Did you update your project from an older version? Did you adjust, or restructure any of your structures within your project?
[2015.11.21-21.44.08:370][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/BP_itemmaster.BP_itemmaster_C:S_itemdata'. Unknown structure.
[2015.11.21-21.44.08:370][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/GUI/W_invButton.W_invButton_C:S_itemDeta'. Unknown structure.
[2015.11.21-21.44.08:371][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/BP_BenimSaveim.BP_BenimSaveim_C:inventorysaved.inventorysaved'. Unknown structure.
[2015.11.21-21.44.08:371][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/W_acilgiris.W_acilgiris_C:GetBrush_0.CallFunc_Array_Get_Item'. Unknown structure.
[2015.11.21-21.44.08:371][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/W_acilgiris.W_acilgiris_C:s_itemdetahasta'. Unknown structure.
[2015.11.21-21.44.08:372][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/W_Hastalistesi.W_Hastalistesi_C:GetBrush_0.CallFunc_Array_Get_Item'. Unknown structure.
[2015.11.21-21.44.08:372][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/W_Hastalistesi.W_Hastalistesi_C:s_itemdetahasta'. Unknown structure.
[2015.11.21-21.44.08:372][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/W_fotoAhmetFadime.W_fotoAhmetFadime_C:GetBrush_0.CallFunc_Array_Get_Item'. Unknown structure.
[2015.11.21-21.44.08:372][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/W_fotoAhmetFadime.W_fotoAhmetFadime_C:s_itemdetahasta'. Unknown structure.
[2015.11.21-21.44.08:373][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/W_foto1.W_foto1_C:GetBrush_0.CallFunc_Array_Get_Item'. Unknown structure.
[2015.11.21-21.44.08:373][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/W_foto1.W_foto1_C:s_itemdetahasta'. Unknown structure.
[2015.11.21-21.44.08:373][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/W_brosur.W_brosur_C:GetBrush_0.CallFunc_Array_Get_Item'. Unknown structure.
[2015.11.21-21.44.08:373][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/W_brosur.W_brosur_C:s_itemdetahasta'. Unknown structure.
[2015.11.21-21.44.08:374][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/W_Alpaykayit.W_Alpaykayit_C:GetBrush_0.CallFunc_Array_Get_Item'. Unknown structure.
[2015.11.21-21.44.08:374][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/W_Alpaykayit.W_Alpaykayit_C:s_itemdetahasta'. Unknown structure.
[2015.11.21-21.44.08:374][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/W_yikanmalistesi.W_yikanmalistesi_C:GetBrush_0.CallFunc_Array_Get_Item'. Unknown structure.
[2015.11.21-21.44.08:374][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/W_yikanmalistesi.W_yikanmalistesi_C:s_itemdetahasta'. Unknown structure.
[2015.11.21-21.44.08:375][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/W_Xray1.W_Xray1_C:GetBrush_0.CallFunc_Array_Get_Item'. Unknown structure.
[2015.11.21-21.44.08:375][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/W_Xray1.W_Xray1_C:s_itemdetahasta'. Unknown structure.
[2015.11.21-21.44.08:375][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/W_OzelHasta.W_OzelHasta_C:GetBrush_0.CallFunc_Array_Get_Item'. Unknown structure.
[2015.11.21-21.44.08:375][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/W_OzelHasta.W_OzelHasta_C:s_itemdetahasta'. Unknown structure.
[2015.11.21-21.44.08:376][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/W_Otopsi.W_Otopsi_C:GetBrush_0.CallFunc_Array_Get_Item'. Unknown structure.
[2015.11.21-21.44.08:376][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/W_Otopsi.W_Otopsi_C:s_itemdetahasta'. Unknown structure.
[2015.11.21-21.44.08:376][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/w_organkitap.w_organkitap_C:GetBrush_0.CallFunc_Array_Get_Item'. Unknown structure.
[2015.11.21-21.44.08:376][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/w_organkitap.w_organkitap_C:s_itemdetahasta'. Unknown structure.
[2015.11.21-21.44.08:377][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/W_KazaraporuMemduh.W_KazaraporuMemduh_C:GetBrush_0.CallFunc_Array_Get_Item'. Unknown structure.
[2015.11.21-21.44.08:377][ 0]LogInit:Display: LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/1nventory/Actor/Item/Oku/HastaWidget/W_KazaraporuMemduh.W_KazaraporuMemduh_C:s_itemdetahasta'. Unknown structure.
Here are the warnings from the provided. The only show up to 50 warnings at any given time. The say you have 79 errors and 1584 warnings.
[2015.11.21-21.44.08:378][ 0]LogInit:Display: LogTextLocalizationManager:Warning: Loaded localization resources contain conflicting entries for (Namespace:ContentBrowser, Key:ImportAssetToolTip):
Localization Resource: (C:/Program Files/Epic Games/4.8/Engine/Content/Localization/Editor/en/Editor.locres) Source String Hash: (-630476809) Localized String: (Import to {0}...)
Localization Resource: (C:/Program Files/Epic Games/4.8/Engine/Content/Localization/Editor/en/Editor.locres) Source String Hash: (1271782899) Localized String: (Imports an asset from file to this folder.)
[2015.11.21-21.44.08:378][ 0]LogInit:Display: LogLinker:Warning: Asset '../../../../../../Users/DBK/Documents/Unreal Projects/ALpha_2/Content/MT_Parents/Textures/TX_ParentPlaceholder_Ems.uasset' has been saved with empty engine version. The asset will be loaded but may be incompatible.
[2015.11.21-21.44.08:379][ 0]LogInit:Display: LogClass:Warning: Property S_itemdata of BP_itemmaster_C struct type mismatch STRUCT_REINST_S_itemData_0/FallbackStruct for package: ../../../../../../Users/DBK/Documents/Unreal Projects/ALpha_2/Content/1nventory/Actor/Item/BP_itemmaster.uasset. If that property got renamed, add an ActiveStructRedirect.
[2015.11.21-21.44.08:379][ 0]LogInit:Display: LogClass:Warning: Property S_itemdata of BP_itemmaster_C struct type mismatch FallbackStruct/S_itemData for package: FObjectReader. If that property got renamed, add an ActiveStructRedirect.
[2015.11.21-21.44.08:379][ 0]LogInit:Display: LogLinker:Warning: Asset '../../../Engine/Content/Functions/Engine_MaterialFunctions01/SpeedTree/SpeedTreeColorVariation.uasset' has been saved with empty engine version. The asset will be loaded but may be incompatible.
[2015.11.21-21.44.08:380][ 0]LogInit:Display: LogLinker:Warning: BoolProperty_1811 has an inappropriate outermost, it was probably saved with a deprecated outer (file: ../../../../../../Users/DBK/Documents/Unreal Projects/ALpha_2/Content/1nventory/GUI/W_invButton.uasset)
[2015.11.21-21.44.08:380][ 0]LogInit:Display: LogLinker:Warning: StrProperty_438 has an inappropriate outermost, it was probably saved with a deprecated outer (file: ../../../../../../Users/DBK/Documents/Unreal Projects/ALpha_2/Content/1nventory/GUI/W_invButton.uasset)
[2015.11.21-21.44.08:380][ 0]LogInit:Display: LogClass:Warning: Property S_itemDeta of W_invButton_C struct type mismatch STRUCT_REINST_S_itemData_0/FallbackStruct for package: ../../../../../../Users/DBK/Documents/Unreal Projects/ALpha_2/Content/1nventory/GUI/W_invButton.uasset. If that property got renamed, add an ActiveStructRedirect.
[2015.11.21-21.44.08:381][ 0]LogInit:Display: LogClass:Warning: Property S_itemDeta of W_invButton_C struct type mismatch FallbackStruct/S_itemData for package: FObjectReader. If that property got renamed, add an ActiveStructRedirect.
[2015.11.21-21.44.08:381][ 0]LogInit:Display: LogLinker:Warning: Can't find file '/Game/Models/fps_hands_stm'
[2015.11.21-21.44.08:381][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to load '/Game/Models/fps_hands_stm': Can't find file '/Game/Models/fps_hands_stm'
[2015.11.21-21.44.08:381][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to find object 'Object /Game/Models/fps_hands_stm.fps_hands_stm'
[2015.11.21-21.44.08:381][ 0]LogInit:Display: CookResults:Warning: Warning Unable to generate long package name for BoolProperty_1811. Path should start with a '/'
[2015.11.21-21.44.08:381][ 0]LogInit:Display: LogCook:Warning: Unable to generate long package name for BoolProperty_1811. Path should start with a '/'
[2015.11.21-21.44.08:382][ 0]LogInit:Display: CookResults:Warning: Warning Unable to generate long package name for StrProperty_438. Path should start with a '/'
[2015.11.21-21.44.08:382][ 0]LogInit:Display: LogCook:Warning: Unable to generate long package name for StrProperty_438. Path should start with a '/'
[2015.11.21-21.44.08:382][ 0]LogInit:Display: LogLinker:Warning: StructProperty_1231 has an inappropriate outermost, it was probably saved with a deprecated outer (file: ../../../../../../Users/DBK/Documents/Unreal Projects/ALpha_2/Content/1nventory/Actor/Item/Oku/HastaWidget/W_acilgiris.uasset)
[2015.11.21-21.44.08:382][ 0]LogInit:Display: LogClass:Warning: Property s_itemdetahasta of W_acilgiris_C struct type mismatch STRUCT_REINST_S_itemData_0/FallbackStruct for package: ../../../../../../Users/DBK/Documents/Unreal Projects/ALpha_2/Content/1nventory/Actor/Item/Oku/HastaWidget/W_acilgiris.uasset. If that property got renamed, add an ActiveStructRedirect.
[2015.11.21-21.44.08:383][ 0]LogInit:Display: LogClass:Warning: Property s_itemdetahasta of W_acilgiris_C struct type mismatch FallbackStruct/S_itemData for package: FObjectReader. If that property got renamed, add an ActiveStructRedirect.
[2015.11.21-21.44.08:383][ 0]LogInit:Display: LogLinker:Warning: Asset '../../../Engine/Content/Functions/Engine_MaterialFunctions02/Utility/CustomReflectionVector.uasset' has been saved with empty engine version. The asset will be loaded but may be incompatible.
[2015.11.21-21.44.08:383][ 0]LogInit:Display: LogBlueprint:Warning: [compiler 4] Warning 'Item' is already a 'BP Puzzle', you don't need Cast To BP_Puzzle .
[2015.11.21-21.44.08:383][ 0]LogInit:Display: LogBlueprint:Warning: [compiler 4] Warning [0018.92] Compile of 4 successful, but with 1 Warning(s) [in 249 ms]
[2015.11.21-21.44.08:384][ 0]LogInit:Display: LogBlueprint:Warning: [compiler 4] Warning [0018.92] Compile of 4 successful, but with 2 Warning(s) [in 0 ms]
[2015.11.21-21.44.08:384][ 0]LogInit:Display: LogMaterial:Warning: Failed to compile Material /Game/Animation/Kubra/Bodymat_eyelashes.Bodymat_eyelashes for platform PCD3D_SM5, Default Material will be used in game.
[2015.11.21-21.44.08:384][ 0]LogInit:Display: LogMaterial:Warning: (Node TextureSample) TextureSample> Sampler type is Color, should be Linear Color for /Game/Animation/Kubra/FuseModel_Body_specular.FuseModel_Body_specular
[2015.11.21-21.44.08:384][ 0]LogInit:Display: LogMaterial:Warning: Failed to compile Material /Game/Animation/Kubra/Bodymat_eyelashes.Bodymat_eyelashes for platform PCD3D_SM4, Default Material will be used in game.
[2015.11.21-21.44.08:384][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to find object 'Object None.SM_Jagged_Rock01'
[2015.11.21-21.44.08:385][ 0]LogInit:Display: LogLinker:Warning: Can't find file '/Game/for_test_del/Locker_box_stm'
[2015.11.21-21.44.08:385][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to load '/Game/for_test_del/Locker_box_stm': Can't find file '/Game/for_test_del/Locker_box_stm'
[2015.11.21-21.44.08:385][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to find object 'Object /Game/for_test_del/Locker_box_stm.Locker_box_stm'
[2015.11.21-21.44.08:385][ 0]LogInit:Display: LogLinker:Warning: Can't find file '/Game/Models/Man_test_size'
[2015.11.21-21.44.08:385][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to load '/Game/Models/Man_test_size': Can't find file '/Game/Models/Man_test_size'
[2015.11.21-21.44.08:386][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to find object 'Object /Game/Models/Man_test_size.Man_test_size'
[2015.11.21-21.44.08:386][ 0]LogInit:Display: LogLinker:Warning: Can't find file '/Game/Assets/Mesh/SM_Hallway_Poster01'
[2015.11.21-21.44.08:386][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to load '/Game/Assets/Mesh/SM_Hallway_Poster01': Can't find file '/Game/Assets/Mesh/SM_Hallway_Poster01'
[2015.11.21-21.44.08:386][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to find object 'Object /Game/Assets/Mesh/SM_Hallway_Poster01.SM_Hallway_Poster01'
[2015.11.21-21.44.08:386][ 0]LogInit:Display: LogLinker:Warning: Can't find file '/Game/Models/Props/Refrigerator_opened'
[2015.11.21-21.44.08:386][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to load '/Game/Models/Props/Refrigerator_opened': Can't find file '/Game/Models/Props/Refrigerator_opened'
[2015.11.21-21.44.08:387][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to find object 'Object /Game/Models/Props/Refrigerator_opened.Refrigerator_opened'
[2015.11.21-21.44.08:387][ 0]LogInit:Display: LogLinker:Warning: Can't find file '/Game/Environments/Foliage/Grass/FieldGrass/SM_FieldGrass_01'
[2015.11.21-21.44.08:387][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to load '/Game/Environments/Foliage/Grass/FieldGrass/SM_FieldGrass_01': Can't find file '/Game/Environments/Foliage/Grass/FieldGrass/SM_FieldGrass_01'
[2015.11.21-21.44.08:388][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to find object 'Object /Game/Environments/Foliage/Grass/FieldGrass/SM_FieldGrass_01.SM_FieldGrass_01'
[2015.11.21-21.44.08:388][ 0]LogInit:Display: LogShaderCompilers:Warning: Failed to compile Material /Game/ExampleContent/PostProcessing/Materials/PPMAT_BlendablePostProcess2.PPMAT_BlendablePostProcess2 for platform PCD3D_SM5, Default Material will be used in game.
[2015.11.21-21.44.08:388][ 0]LogInit:Display: CookResults:Warning: Warning Unable to generate long package name for StructProperty_1231. Path should start with a '/'
[2015.11.21-21.44.08:389][ 0]LogInit:Display: LogCook:Warning: Unable to generate long package name for StructProperty_1231. Path should start with a '/'
[2015.11.21-21.44.08:389][ 0]LogInit:Display: LogLinker:Warning: Can't find file '/Game/Benimkiler/fount_shd'
[2015.11.21-21.44.08:390][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to load '/Game/Benimkiler/fount_shd': Can't find file '/Game/Benimkiler/fount_shd'
[2015.11.21-21.44.08:390][ 0]LogInit:Display: LogLinker:Warning: Can't find file for asset '/Game/Benimkiler/fount_shd' while loading ../../../../../../Users/DBK/Documents/Unreal Projects/ALpha_2/Content/Assets/Buornek/Benimkiler/fount.uasset.
[2015.11.21-21.44.08:390][ 0]LogInit:Display: LogUObjectGlobals:Warning: Failed to load '../../../../../../Users/DBK/Documents/Unreal Projects/ALpha_2/Content/Assets/Buornek/Benimkiler/fount.uasset': Can't find file for asset '/Game/Benimkiler/fount_shd' while loading ../../../../../../Users/DBK/Documents/Unreal Projects/ALpha_2/Content/Assets/Buornek/Benimkiler/fount.uasset.
[2015.11.21-21.44.08:390][ 0]LogInit:Display: LogLinker:Warning: Can't find file for asset '/Game/Benimkiler/fount_shd' while loading NULL.