"org.jruby.rack.RackInitializationException: IO error -- rack" on Tomcat 5.5

Hi.

I am trying to deploy a war i made with warbler 0.9.9. When i drop it
into tomcat i get a wierd error in the logs:

SEVERE: Warning: error application could not be initialized
org.jruby.rack.RackInitializationException: IO error -- rack
        from file:/var/lib/tomcat5.5/webapps/auktion/WEB-INF/lib/jruby-rack-0.9.jar!/jruby/rack.rb:7
        from file:/var/lib/tomcat5.5/webapps/auktion/WEB-INF/lib/jruby-rack-0.9.jar!/jruby/rack.rb:7:in
`require'
        from file:/var/lib/tomcat5.5/webapps/auktion/WEB-INF/lib/jruby-rack-0.9.jar!/rack/handler/servlet.rb:7
        from file:/var/lib/tomcat5.5/webapps/auktion/WEB-INF/lib/jruby-rack-0.9.jar!/rack/handler/servlet.rb:1:in
`require'
        from <script>:1

.. and further down:

Caused by: org.jruby.exceptions.RaiseException: IO error -- rack
Caused by: java.lang.StringIndexOutOfBoundsException: String index out
of range: -1
        at java.lang.String.substring(String.java:1932)
        at java.lang.String.substring(String.java:1905)


I have tried adding the rack gem to the gems, and have tried both the
jruby 1.1.1 and 1.1.2 jars.

What could be the problem?

full backtrace:

org.jruby.rack.RackInitializationException: IO error -- rack
        from file:/var/lib/tomcat5.5/webapps/auktion/WEB-INF/lib/jruby-rack-0.9.jar!/jruby/rack.rb:7
        from file:/var/lib/tomcat5.5/webapps/auktion/WEB-INF/lib/jruby-rack-0.9.jar!/jruby/rack.rb:7:in
`require'
        from file:/var/lib/tomcat5.5/webapps/auktion/WEB-INF/lib/jruby-rack-0.9.jar!/rack/handler/servlet.rb:7
        from file:/var/lib/tomcat5.5/webapps/auktion/WEB-INF/lib/jruby-rack-0.9.jar!/rack/handler/servlet.rb:1:in
`require'
        from <script>:1

        at org.jruby.rack.DefaultRackApplicationFactory.newRuntime(DefaultRackApplicationFactory.java:85)
        at org.jruby.rack.DefaultRackApplicationFactory.createApplication(DefaultRackApplicationFactory.java:144)
        at org.jruby.rack.DefaultRackApplicationFactory.newErrorApplication(DefaultRackApplicationFactory.java:99)
        at org.jruby.rack.DefaultRackApplicationFactory.init(DefaultRackApplicationFactory.java:39)
        at org.jruby.rack.PoolingRackApplicationFactory.init(PoolingRackApplicationFactory.java:53)
        at org.jruby.rack.RackServletContextListener.contextInitialized(RackServletContextListener.java:38)
        at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3764)
        at org.apache.catalina.core.StandardContext.start(StandardContext.java:4216)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:760)
        at org.apache.catalina.core.ContainerBase.access$0(ContainerBase.java:744)
        at org.apache.catalina.core.ContainerBase$PrivilegedAddChild.run(ContainerBase.java:144)
        at java.security.AccessController.doPrivileged(Native Method)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:738)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:544)
        at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:825)
        at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:714)
        at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:490)
        at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1206)
        at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:293)
        at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120)
        at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1306)
        at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1570)
        at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1579)
        at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1559)
        at java.lang.Thread.run(Thread.java:619)
Caused by: org.jruby.exceptions.RaiseException: IO error -- rack
Caused by: java.lang.StringIndexOutOfBoundsException: String index out
of range: -1
        at java.lang.String.substring(String.java:1932)
        at java.lang.String.substring(String.java:1905)
        at org.jruby.RubyFile.expand_path(RubyFile.java:1000)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.jruby.internal.runtime.methods.ReflectedJavaMethod.call(ReflectedJavaMethod.java:141)
        at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:233)
        at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:142)
        at org.jruby.runtime.CallSite$InlineCachingCallSite.cacheAndCall(CallSite.java:141)
        at org.jruby.runtime.CallSite$InlineCachingCallSite.call(CallSite.java:336)
        at org.jruby.ast.CallOneArgNode.interpret(CallOneArgNode.java:57)
        at org.jruby.ast.CallOneArgNode.interpret(CallOneArgNode.java:57)
        at org.jruby.ast.NewlineNode.interpret(NewlineNode.java:101)
        at org.jruby.ast.BlockNode.interpret(BlockNode.java:67)
        at org.jruby.ast.RootNode.interpret(RootNode.java:126)
        at org.jruby.Ruby.loadFile(Ruby.java:2018)
        at org.jruby.runtime.load.ExternalScript.load(ExternalScript.java:58)
        at org.jruby.runtime.load.LoadService.smartLoad(LoadService.java:320)
        at org.jruby.runtime.load.LoadService.require(LoadService.java:346)
        at org.jruby.RubyKernel.require(RubyKernel.java:769)
        at sun.reflect.GeneratedMethodAccessor101.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.jruby.internal.runtime.methods.ReflectedJavaMethod.call(ReflectedJavaMethod.java:141)
        at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:233)
        at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:142)
        at org.jruby.runtime.CallSite$InlineCachingCallSite.cacheAndCall(CallSite.java:141)
        at org.jruby.runtime.CallSite$InlineCachingCallSite.call(CallSite.java:336)
        at org.jruby.ast.FCallOneArgNode.interpret(FCallOneArgNode.java:36)
        at org.jruby.ast.NewlineNode.interpret(NewlineNode.java:101)
        at org.jruby.ast.BlockNode.interpret(BlockNode.java:67)
        at org.jruby.ast.RootNode.interpret(RootNode.java:126)
        at org.jruby.Ruby.loadFile(Ruby.java:2018)
        at org.jruby.runtime.load.ExternalScript.load(ExternalScript.java:58)
        at org.jruby.runtime.load.LoadService.smartLoad(LoadService.java:320)
        at org.jruby.runtime.load.LoadService.require(LoadService.java:346)
        at org.jruby.RubyKernel.require(RubyKernel.java:769)
        at sun.reflect.GeneratedMethodAccessor101.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.jruby.internal.runtime.methods.ReflectedJavaMethod.call(ReflectedJavaMethod.java:141)
        at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:233)
        at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:142)
        at org.jruby.runtime.CallSite$InlineCachingCallSite.cacheAndCall(CallSite.java:141)
        at org.jruby.runtime.CallSite$InlineCachingCallSite.call(CallSite.java:336)
        at org.jruby.ast.FCallOneArgNode.interpret(FCallOneArgNode.java:36)
        at org.jruby.ast.NewlineNode.interpret(NewlineNode.java:101)
        at org.jruby.ast.BlockNode.interpret(BlockNode.java:67)
        at org.jruby.ast.RootNode.interpret(RootNode.java:126)
        at org.jruby.Ruby.loadFile(Ruby.java:2018)
        at org.jruby.runtime.load.ExternalScript.load(ExternalScript.java:58)
        at org.jruby.runtime.load.LoadService.smartLoad(LoadService.java:320)
        at org.jruby.runtime.load.LoadService.require(LoadService.java:346)
        at org.jruby.RubyKernel.require(RubyKernel.java:769)
        at sun.reflect.GeneratedMethodAccessor101.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.jruby.internal.runtime.methods.ReflectedJavaMethod.call(ReflectedJavaMethod.java:141)
        at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:233)
        at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:142)
        at org.jruby.runtime.CallSite$InlineCachingCallSite.cacheAndCall(CallSite.java:141)
        at org.jruby.runtime.CallSite$InlineCachingCallSite.call(CallSite.java:336)
        at org.jruby.ast.FCallOneArgNode.interpret(FCallOneArgNode.java:36)
        at org.jruby.ast.NewlineNode.interpret(NewlineNode.java:101)
        at org.jruby.ast.RootNode.interpret(RootNode.java:126)
        at org.jruby.Ruby.evalScriptlet(Ruby.java:231)
        at org.jruby.rack.DefaultRackApplicationFactory.newRuntime(DefaultRackApplicationFactory.java:82)
        at org.jruby.rack.DefaultRackApplicationFactory.createApplication(DefaultRackApplicationFactory.java:144)
        at org.jruby.rack.DefaultRackApplicationFactory.newErrorApplication(DefaultRackApplicationFactory.java:99)
        at org.jruby.rack.DefaultRackApplicationFactory.init(DefaultRackApplicationFactory.java:39)
        at org.jruby.rack.PoolingRackApplicationFactory.init(PoolingRackApplicationFactory.java:53)
        at org.jruby.rack.RackServletContextListener.contextInitialized(RackServletContextListener.java:38)
        at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3764)
        at org.apache.catalina.core.StandardContext.start(StandardContext.java:4216)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:760)
        at org.apache.catalina.core.ContainerBase.access$0(ContainerBase.java:744)
        at org.apache.catalina.core.ContainerBase$PrivilegedAddChild.run(ContainerBase.java:144)
        at java.security.AccessController.doPrivileged(Native Method)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:738)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:544)
        at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:825)
        at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:714)
        at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:490)
        at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1206)
        at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:293)
        at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:120)
        at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1306)
        at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1570)
        at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1579)
        at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1559)
        at java.lang.Thread.run(Thread.java:619)

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