Each version of this integration matches a specific build of Unreal Engine 4. Here is what has changed between the 2017.1.4.6407.760 and the 2017.1.5.6429.783 release of the integration (in addition to upgrading to the new Unreal build).

Unreal Engine 4.15/4.16/4.17/4.18 - Wwise 2017.1.5.6429.783

• WG-36016 Fixed error message about unknown game object ID when loading an empty map.
• WG-36200 Fixed crash when running editor with -game flag.