BusinessObjects SDK Java compatibility Java version

I am trying to make an SDK app, and I am working with the newest Java version (I believe Java 8u60) and I have installed SAP BI 4.1 SP 6 on a VM. When I ran my program first from the BOE scheduling functionality, I got this error:

Exception in thread "main" java.lang.UnsupportedClassVersionError: com/ghc/bo/extract/ExecuteExtract : Unsupported major.minor version 52.0
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClassCond(ClassLoader.java:735)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:716)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:336)
    at java.net.URLClassLoader.access$000(URLClassLoader.java:59)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:250)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:243)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:372)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:344)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:313)
    at com.crystaldecisions.sdk.plugin.desktop.program.internal.ProgramWrapper.main(ProgramWrapper.java:49)

and then I switched the compiler compliance level to 1.7, and now I'm getting this error:

Exception in thread "main" java.lang.UnsupportedClassVersionError: com/ghc/bo/extract/ExecuteExtract : Unsupported major.minor version 51.0
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClassCond(ClassLoader.java:735)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:716)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:336)
    at java.net.URLClassLoader.access$000(URLClassLoader.java:59)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:250)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:243)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:372)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:344)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:313)
    at com.crystaldecisions.sdk.plugin.desktop.program.internal.ProgramWrapper.main(ProgramWrapper.java:49)

I needed to set the compiler compliance level to 1.6.