I just downloaded the most recent version of Eclipse Luna, and immediately installed the Aptana 3.0 plugin. After doing this I got a bunch of errors, the same errors as listed in this post:
An internal error occurred during: "Loading bundle[...]"
!ENTRY org.eclipse.core.jobs 4 2 2014-09-27 19:19:23.753 !MESSAGE An internal error occurred during: "Loading bundle: /opt/eclipse/configuration/org.eclipse.osgi/873/0/.cp/bundles/php.ruble". !STACK 0 java.lang.ClassCastException: org.eclipse.osgi.internal.framework.EquinoxConfiguration$1 cannot be cast to java.lang.String at org.jruby.util.OSEnvironment.getAsMapOfRubyStrings(OSEnvironment.java:90) at org.jruby.util.OSEnvironment.getSystemPropertiesMap(OSEnvironment.java:75) at org.jruby.RubyGlobal.defineGlobalEnvConstants(RubyGlobal.java:393) at org.jruby.RubyGlobal.createGlobals(RubyGlobal.java:358) at org.jruby.Ruby.init(Ruby.java:1078) at org.jruby.Ruby.newInstance(Ruby.java:186) at org.jruby.embed.internal.SingletonLocalContextProvider.getRuntime(SingletonLocalContextProvider.java:95) at org.jruby.embed.internal.EmbedRubyRuntimeAdapterImpl.runParser(EmbedRubyRuntimeAdapterImpl.java:166) at org.jruby.embed.internal.EmbedRubyRuntimeAdapterImpl.parse(EmbedRubyRuntimeAdapterImpl.java:93) at org.jruby.embed.ScriptingContainer.parse(ScriptingContainer.java:1163) at org.jruby.embed.ScriptingContainer.runScriptlet(ScriptingContainer.java:1223) at com.aptana.scripting.ScriptingEngine.getInitializedScriptingContainer(ScriptingEngine.java:292) at com.aptana.scripting.model.ScriptLoadJob.run(ScriptLoadJob.java:76) at com.aptana.scripting.model.AbstractScriptRunner.run(AbstractScriptRunner.java:144) at com.aptana.scripting.model.AbstractScriptRunner.run(AbstractScriptRunner.java:180) at com.aptana.scripting.ScriptingEngine.runScript(ScriptingEngine.java:274) at com.aptana.scripting.ScriptingEngine.runScript(ScriptingEngine.java:243) at com.aptana.scripting.model.BundleManager.loadScript(BundleManager.java:2032) at com.aptana.scripting.model.BundleManager$BundleLoadJob.run(BundleManager.java:129) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Apparently there is a fix available for this, a patch can be applied from the updates for Eclipse 4.4. I found the patch Eclipse 4.4.1 Patches for bug 445122 and tried to install it. E4 RCP Patch (bugzillas 445122) 1.0.0 org.eclipse.e4.rcp.R441patch.feature.group Eclipse.org installed properly, but three others will not installed:
Equinox CORE Feature Patch (bugzillas 445122) 1.0.0
Equinox CORE SDK Patch (bugzillas 445122) 1.0.0
Equinox Server CORE Patch (bugzillas 445122) 1.0.0
and when I restart Eclipse I am still encountering the same error, it does not appear to be fixed.