“Java.exe” exited with code 1 (Proguard issue)

Question

I get the following error when I build my Xamarin.Android app in Release.

\"Java.exe\" exited with code 1

Here is the output...

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Answer 1

You can see the problem here:

Caused by: java.io.IOException: Can't process class [java/nio/charset/CharsetDecoder.class] (Unsupported class version number [52.0] (maximum 51.0, Java 1.7))

Solution: Change your Java target to 7 (1.7).