GenotypeHarmonizer installation issue?

[Genevieve Roberts]

When I try to run GenotypeHarmonizer, I get the following error. I am not sure what "Unsupported major.minor version" means. Can you advise on how to troubleshoot?

Thank you very much!
Gen

GenotypeHarmonizer.sh
Exception in thread "main" java.lang.UnsupportedClassVersionError: nl/umcg/deelenp/genotypeharmonizer/GenotypeHarmonizer : Unsupported major.minor version 51.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:634)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)
at java.net.URLClassLoader.access$000(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:212)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
Could not find the main class: nl.umcg.deelenp.genotypeharmonizer.GenotypeHarmonizer. Program will exit.

[Genevieve Roberts]

It was the version of Java. switched to java 1.7 and it works. Thanks.