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Symptom

When trying to start the Runtime, it crashes instantly. The error is as follows:

Exception in thread "main" java.lang.UnsupportedClassVersionError: com/indy/engine/EngineStartI (Unsupported major.minor version 50.0)
        at java.lang.ClassLoader.defineClass0(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:537)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:13)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:251)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)

Note: On Windows systems, the command window is immediately closed. Type "cmd" inside a command window, and then type "startengine.bat" to see the error message.

Solution

Define the STAMBIA_JAVA_HOME environment variable, and set its value to the absolute path of a valid Java installation (JRE or JDK version 6, 7, or 8).

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