Here is the crash log report -
LoginId:8384c5754b58617d9e719985327ca207
EpicAccountId:39a6e26cdf934f30b35fe6fc3ae48408
Assertion failed: ReaderPos + Num <= ReaderSize [File:D:\Build++UE4\Sync\Engine\Source\Runtime\Core\Public\Serialization/BufferReader.h] [Line: 53]
UE4Editor_Core
UE4Editor_Core
UE4Editor_MeshDescription
UE4Editor_Core
UE4Editor_MeshDescription
UE4Editor_MeshDescription
UE4Editor_MeshDescription
UE4Editor_MeshDescription
UE4Editor_MeshDescription
UE4Editor_MeshDescription
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_MeshBuilder
UE4Editor_MeshBuilder
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_CoreUObject
UE4Editor_Engine
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_ContentBrowserAssetDataSource
UE4Editor_ContentBrowserAssetDataSource
UE4Editor_ContentBrowserAssetDataSource
UE4Editor_ContentBrowser
UE4Editor_ContentBrowser
UE4Editor_ContentBrowser
UE4Editor_ContentBrowser
UE4Editor_ContentBrowser
UE4Editor_ContentBrowser
UE4Editor_ContentBrowser
UE4Editor_Slate
UE4Editor_Slate
UE4Editor_Slate
UE4Editor_Slate
UE4Editor_ApplicationCore
UE4Editor_ApplicationCore
UE4Editor_ApplicationCore
UE4Editor_ApplicationCore
user32
user32
UE4Editor_ApplicationCore
UE4Editor
UE4Editor
UE4Editor
UE4Editor
UE4Editor
kernel32
ntdll