When I run the attached file I get:

C:\scm>jruby sand.rb
Exception in thread "main" java.lang.NoSuchMethodError:
org.jruby.runtime.load.LoadService.load(Ljava/lang/String;)V
        at org.jruby.ext.sandbox.Sandkit.init_prelude(Sandkit.java:751)
        at org.jruby.ext.sandbox.SandboxFull.initialize(SandboxFull.java:132)
        at org.jruby.ext.sandbox.SandboxFullInvoker$initialize_FSopt.call(Unknown Source)
        at org.jruby.runtime.callback.FastInvocationCallback.execute(FastInvocationCallback.java:55)
        at org.jruby.internal.runtime.methods.SimpleCallbackMethod.call(SimpleCallbackMethod.java:67)
        at org.jruby.RubyClass.invoke(RubyClass.java:239)
        at org.jruby.javasupport.util.RuntimeHelpers.invoke(RuntimeHelpers.java:326)
        at org.jruby.RubyObject.callMethod(RubyObject.java:475)
        at org.jruby.RubyObject.callInit(RubyObject.java:485)
        at org.jruby.ext.sandbox.SandboxFull.newInstance(SandboxFull.java:56)
        at org.jruby.ext.sandbox.SandboxFullInvoker$newInstance_FSopt.call(Unknown Source)
        at org.jruby.runtime.callback.FastInvocationCallback.execute(FastInvocationCallback.java:55)
        at org.jruby.internal.runtime.methods.SimpleCallbackMethod.call(SimpleCallbackMethod.java:67)
        at org.jruby.RubyClass.invoke(RubyClass.java:239)
        at org.jruby.javasupport.util.RuntimeHelpers.invoke(RuntimeHelpers.java:326)
        at org.jruby.RubyObject.callMethod(RubyObject.java:472)
        at org.jruby.ext.sandbox.SandboxFull.s_new(SandboxFull.java:61)
        at org.jruby.ext.sandbox.SandboxFullInvoker$s_new_FSopt.call(Unknown Source)
        at org.jruby.runtime.callback.FastInvocationCallback.execute(FastInvocationCallback.java:55)
        at org.jruby.internal.runtime.methods.SimpleCallbackMethod.call(SimpleCallbackMethod.java:67)
        at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:70)
        at org.jruby.runtime.CallSite$InlineCachingCallSite.cacheAndCall(CallSite.java:181)
        at org.jruby.runtime.CallSite$InlineCachingCallSite.call(CallSite.java:329)
        at ruby.C_3a_.scm.sand.__file__(sand.rb:3)
        at ruby.C_3a_.scm.sand.load(sand.rb)
        at org.jruby.Ruby.runScript(Ruby.java:491)
        at org.jruby.Ruby.runNormally(Ruby.java:411)
        at org.jruby.Ruby.runFromMain(Ruby.java:291)
        at org.jruby.Main.run(Main.java:142)
        at org.jruby.Main.run(Main.java:88)
        at org.jruby.Main.main(Main.java:79)