Exporting google vr unity sdk master sample file from unity and getting error - unity3d

Question

Exporting google vr unity SDK master sample file from unity and getting an error like Error building Player: CommandInvokationFailure: Unable to convert classes into dex format. See the Console for details.
Please see the complete error
Error building Player: CommandInvokationFailure: Unable to convert classes into dex format. See the Console for details.
C:\Program Files\Java\jdk1.7.0_51\bin\java.exe -Xmx2048M -Dcom.android.sdkmanager.toolsdir="C:/Users/Administrator/AppData/Local/Android/sdk\tools" -Dfile.encoding=UTF8 -jar "C:\Program Files\Unity\Editor\Data\PlaybackEngines\AndroidPlayer/Tools\sdktools.jar" -
stderr[
Exception in thread "main" java.lang.UnsupportedClassVersionError: com/android/dx/command/Main : Unsupported major.minor version 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:270)
at SDKMain.main(SDKMain.java:127)
]
stdout[
]

Answer 1

It seems to be a problem of mismatch between the JDK necessary for the google vr sdk and yours. You might need to update your JDK and Android SDK.
This links found another workaround:
link 1
link 2