Failed to load QCARWrapper.dll

Question

I am using unity 5.1.0f(64 bit) and Vuforia SDK Version: vuforia-unity-5-0-5

The web cam is operating normally in windows but in unity in Play Mode not.

I am getting an error message "failed to load QCARWrapper.dll: expected 64bit architecture..."

Can anybody help out solving this issue?

Answer 1

Vuforia 5.0 supports the 32bit version of the Unity Editor on Windows, and the 64bit version on Mac.

So, There are two possible solutions:

1. you just need to install and use the Unity 5 32bit Editor, on Windows.

OR

2. Create a new folder "x86" inside

   Assets>>Plugins

   inside your unity project structure Then move the following files from "Plugins" to newely created "x86" folder.

   • QCARWrapper.lib
   • QCARWrapper.dll
   • QCARWrapper.dll.signature
   • QCARWrapper.exp

After that check log message, If you see the log like:

Setting platform to 'Editor' for plugin: Assets/Plugins/x86/VuforiaWrapper.dll
UnityEngine.Debug:Log(Object)
Vuforia.EditorClasses.ExtensionImport:UpdatePluginSettings() (at Assets/Vuforia/Editor/Scripts/ExtensionImport.cs:43)
UnityEditor.EditorApplication:Internal_CallUpdateFunctions()

Then , Congrats !! You are ready to Go!

FYI More Info:

You need to use the Installer to download and install the additional Android support component, by selecting it from the list of the available components in the Installer wizard;