null array in FileDirContext?

[James Clark]

I just added the following line to my <Host> in server.xml:
  <Context path="/diveport-cache-servlet" 
docBase="C:\Work\Dev\diveport-cache\dist\diveport-cache-servlet"/>

And now Tomcat crashes upon startup, with the following in 'stdout.log':
java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
Caused by: java.lang.NullPointerException
    at java.util.Arrays.sort(Arrays.java:1078)
    at 
org.apache.naming.resources.FileDirContext.list(FileDirContext.java:885)

This happens in both Tomcat 5.0.29-beta and 5.0.25, under Windows XP, 
using Sun's Java SDK 1.4.2_05.

Can anyone help with this problem?
-jamie

(full stack trace below)

java.lang.reflect.InvocationTargetException
    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:324)
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:287)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)
Caused by: java.lang.NullPointerException
    at java.util.Arrays.sort(Arrays.java:1078)
    at 
org.apache.naming.resources.FileDirContext.list(FileDirContext.java:885)
    at 
org.apache.naming.resources.FileDirContext.listBindings(FileDirContext.java:335)
    at 
org.apache.naming.resources.ProxyDirContext.listBindings(ProxyDirContext.java:509)
    at 
org.apache.catalina.util.ExtensionValidator.validateApplication(ExtensionValidator.java:178)
    at 
org.apache.catalina.core.StandardContext.start(StandardContext.java:4191)
    at 
org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1083)
    at org.apache.catalina.core.StandardHost.start(StandardHost.java:789)
    at 
org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1083)
    at 
org.apache.catalina.core.StandardEngine.start(StandardEngine.java:478)
    at 
org.apache.catalina.core.StandardService.start(StandardService.java:480)
    at 
org.apache.catalina.core.StandardServer.start(StandardServer.java:2313)
    at org.apache.catalina.startup.Catalina.start(Catalina.java:556)
    ... 6 more


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