Failed to determine xxxx machine type

I’m getting these messages every time I open my project:

Failed to determine ‘C:/Program Files/Unity 5.5.0b11/Editor/Data/UnityExtensions/Unity/VR/install_with_editor/WindowsStoreApps/uap_arm/AudioPluginMsHRTF.dll’ machine type, the value vas 0x01c4

Failed to load ‘C:/Program Files/Unity 5.5.0b11/Editor/Data/UnityExtensions/Unity/VR/install_with_editor/WindowsStoreApps/uap_arm/AudioPluginMsHRTF.dll’, expected x64 architecture, but was Unknown architecture. You must recompile your plugin for x64 architecture.

Failed to determine ‘C:/Program Files/Unity 5.5.0b11/Editor/Data/UnityExtensions/Unity/VR/install_with_editor/WindowsStoreApps/uap_arm/AudioPluginMsHRTF.dll’ machine type, the value vas 0x01c4

Failed to load ‘C:/Program Files/Unity 5.5.0b11/Editor/Data/UnityExtensions/Unity/VR/install_with_editor/WindowsStoreApps/uap_arm/AudioPluginMsHRTF.dll’, expected x64 architecture, but was Unknown architecture. You must recompile your plugin for x64 architecture.

Failed to determine ‘C:/Program Files/Unity 5.5.0b11/Editor/Data/UnityExtensions/Unity/VR/install_with_editor/WindowsStoreApps/uap_arm/AudioPluginMsHRTF.dll’ machine type, the value vas 0x01c4

Failed to load ‘C:/Program Files/Unity 5.5.0b11/Editor/Data/UnityExtensions/Unity/VR/install_with_editor/WindowsStoreApps/uap_arm/AudioPluginMsHRTF.dll’, expected x64 architecture, but was Unknown architecture. You must recompile your plugin for x64 architecture.

Failed to determine ‘C:/Program Files/Unity 5.5.0b11/Editor/Data/UnityExtensions/Unity/VR/install_with_editor/WindowsStoreApps/uap_arm/AudioPluginMsHRTF.dll’ machine type, the value vas 0x01c4
UnityEditor.Modules.ModuleManager:RegisterAdditionalUnityExtensions()

Failed to load ‘C:/Program Files/Unity 5.5.0b11/Editor/Data/UnityExtensions/Unity/VR/install_with_editor/WindowsStoreApps/uap_arm/AudioPluginMsHRTF.dll’, expected x64 architecture, but was Unknown architecture. You must recompile your plugin for x64 architecture.
UnityEditor.Modules.ModuleManager:RegisterAdditionalUnityExtensions()

Failed to load ‘C:/Program Files/Unity 5.5.0b11/Editor/Data/UnityExtensions/Unity/VR/install_with_editor/WindowsStoreApps/uap_arm/AudioPluginMsHRTF.dll’, expected x64 architecture, but was Unknown architecture. You must recompile your plugin for x64 architecture.
UnityEditor.Modules.ModuleManager:RegisterAdditionalUnityExtensions()

ailed to determine ‘C:/Program Files/Unity 5.5.0b11/Editor/Data/UnityExtensions/Unity/VR/install_with_editor/WindowsStoreApps/uap_arm/AudioPluginMsHRTF.dll’ machine type, the value vas 0x01c4
UnityEditor.Modules.ModuleManager:RegisterAdditionalUnityExtensions()

Failed to load ‘C:/Program Files/Unity 5.5.0b11/Editor/Data/UnityExtensions/Unity/VR/install_with_editor/WindowsStoreApps/uap_arm/AudioPluginMsHRTF.dll’, expected x64 architecture, but was Unknown architecture. You must recompile your plugin for x64 architecture.
UnityEditor.Modules.ModuleManager:RegisterAdditionalUnityExtensions()

Hi georgeq,
This is a known issue and has already been fixed in our repository. Could you check out 5.5.0f1 to see if the problems are resolved there?

Yes the problem is fixed in 5.5.0f1.