Exception trying to use BSF (java.lang.NoClassDefFoundError: org/apache/bsf/util/BSFEngineImp)

I had no problems using BSF from JRuby 1.1.2 or earlier.
Since JRuby 1.1.3 when trying to use BSF I get the following error:

$ jruby --debug testJava.rb
Hello from Ruby
unable to load language: ruby: java.lang.NoClassDefFoundError: org/apache/bsf/util/BSFEngineImpl
at java.lang.ClassLoader.findBootstrapClass(Native Method)
at java.lang.ClassLoader.findBootstrapClass0(ClassLoader.java:891)
at java.lang.ClassLoader.loadClass(ClassLoader.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at org.apache.bsf.BSFManager.loadScriptingEngine(Unknown Source)
at org.apache.bsf.BSFManager.eval(Unknown Source)
at TestBSF.<init>(TestBSF.java:12)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at org.jruby.javasupport.JavaConstructor.new_instance(JavaConstructor.java:195)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jruby.internal.runtime.methods.ReflectedJavaMethod.call(ReflectedJavaMethod.java:143)
at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:134)
at org.jruby.runtime.CallSite$InlineCachingCallSite.call(CallSite.java:279)
at org.jruby.ast.CallNode.interpret(CallNode.java:163)
at org.jruby.ast.AttrAssignOneArgNode.interpret(AttrAssignOneArgNode.java:32)
at org.jruby.ast.NewlineNode.interpret(NewlineNode.java:101)
at org.jruby.ast.BlockNode.interpret(BlockNode.java:67)
at org.jruby.internal.runtime.methods.DefaultMethod.interpretedCall(DefaultMethod.java:171)
at org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:147)
at org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:203)
at org.jruby.runtime.CallSite$InlineCachingCallSite.cacheAndCall(CallSite.java:111)
at org.jruby.runtime.CallSite$InlineCachingCallSite.call(CallSite.java:282)
at org.jruby.ast.FCallNode.interpret(FCallNode.java:139)
at org.jruby.ast.NewlineNode.interpret(NewlineNode.java:101)
at org.jruby.internal.runtime.methods.DefaultMethod.interpretedCall(DefaultMethod.java:171)
at org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:147)
at org.jruby.RubyClass.invoke(RubyClass.java:243)
at org.jruby.javasupport.util.RuntimeHelpers.invoke(RuntimeHelpers.java:270)
at org.jruby.RubyObject.callMethod(RubyObject.java:711)
at org.jruby.RubyClass.newInstance(RubyClass.java:275)
at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jruby.internal.runtime.methods.ReflectedJavaMethod.call(ReflectedJavaMethod.java:143)
at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:134)
at org.jruby.internal.runtime.methods.AliasMethod.call(AliasMethod.java:76)
at org.jruby.runtime.CallSite$InlineCachingCallSite.cacheAndCall(CallSite.java:111)
at org.jruby.runtime.CallSite$InlineCachingCallSite.call(CallSite.java:282)
at org.jruby.ast.FCallNode.interpret(FCallNode.java:139)
at org.jruby.ast.LocalAsgnNode.interpret(LocalAsgnNode.java:115)
at org.jruby.ast.NewlineNode.interpret(NewlineNode.java:101)
at org.jruby.ast.BlockNode.interpret(BlockNode.java:67)
at org.jruby.internal.runtime.methods.DefaultMethod.interpretedCall(DefaultMethod.java:171)
at org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:147)
at org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:224)
at org.jruby.runtime.CallSite$InlineCachingCallSite.cacheAndCall(CallSite.java:123)
at org.jruby.runtime.CallSite$InlineCachingCallSite.call(CallSite.java:333)
at org.jruby.ast.CallNoArgNode.interpret(CallNoArgNode.java:61)
at org.jruby.ast.LocalAsgnNode.interpret(LocalAsgnNode.java:115)
at org.jruby.ast.NewlineNode.interpret(NewlineNode.java:101)
at org.jruby.ast.BlockNode.interpret(BlockNode.java:67)
at org.jruby.ast.RootNode.interpret(RootNode.java:126)
at org.jruby.Ruby.runInterpreter(Ruby.java:561)
at org.jruby.Ruby.runNormally(Ruby.java:460)
at org.jruby.Ruby.runFromMain(Ruby.java:327)
at org.jruby.Main.run(Main.java:194)
at org.jruby.Main.run(Main.java:91)
at org.jruby.Main.main(Main.java:82)

My code:
------------------------------------------
$ cat testJava.rb
require 'java'
include_class 'TestBSF'

puts "Hello from Ruby"
bsf = TestBSF.new
------------------------------------------
$ cat TestBSF.java
import org.apache.bsf.BSFException;
import org.apache.bsf.BSFManager;

public class TestBSF {

public TestBSF() {

BSFManager bsfManager = new BSFManager();
String expression = "puts \"Hello from BSF\" ";

try { bsfManager.eval("ruby", "TestBSF", -1, -1, expression); }
catch (BSFException e) { e.printStackTrace(); }
}
}