When running ruby myapp.rb (after bundling), I get this:

1 ⮀ neo4j_ha ⮀ ruby myapp.rb
‹jruby-1.6.7@sheldon› ∞
ha.initial_hosts: localhost:5001,localhost:5002,localhost:5003
I, [2013-06-07T17:44:56.004000 #76486]  INFO -- : starting Neo4j in HA
mode, machine id: 1 at localhost:6001 db
/Users/jannis/Dev/school/neo4j_ha/db/neo1
NameError: cannot load Java class
org.neo4j.graphdb.factory.HighlyAvailableGraphDatabaseFactory
           for_name at org/jruby/javasupport/JavaClass.java:1205
    get_proxy_class at org/jruby/javasupport/JavaUtilities.java:34
      const_missing at
/Users/jannis/.rvm/rubies/jruby-1.6.7/lib/ruby/site_ruby/shared/builtin/javasupport/java.rb:45
  start_ha_graph_db at
/Users/jannis/.rvm/gems/jruby-1.6.7@sheldon/gems/neo4j-core-2.2.4-java/lib/neo4j-core/database.rb:188
              start at
/Users/jannis/.rvm/gems/jruby-1.6.7@sheldon/gems/neo4j-core-2.2.4-java/lib/neo4j-core/database.rb:62
              start at
/Users/jannis/.rvm/gems/jruby-1.6.7@sheldon/gems/neo4j-core-2.2.4-java/lib/neo4j-core/database.rb:53
              start at
/Users/jannis/.rvm/gems/jruby-1.6.7@sheldon/gems/neo4j-core-2.2.4-java/lib/neo4j/neo4j.rb:41
              start at myapp.rb:21
             (root) at myapp.rb:24
 1 ⮀ neo4j_ha