Running gradle caused the following stack trace:

colin-yatess-macbook-pro:nested-web colinyates$ gradle

Build aborted because of an internal error.
Run with -d option to get additonal debug info. Please file an issue at: www.gradle.org

java.lang.NullPointerException
at org.gradle.groovy.scripts.DefaultCachePropertiesHandler.createHash(DefaultCachePropertiesHandler.java:67)
at org.gradle.groovy.scripts.DefaultCachePropertiesHandler.writeProperties(DefaultCachePropertiesHandler.java:36)
at org.gradle.groovy.scripts.DefaultScriptCompilationHandler.writeToCache(DefaultScriptCompilationHandler.java:85)
at org.gradle.groovy.scripts.DefaultScriptProcessor.loadViaCache(DefaultScriptProcessor.java:65)
at org.gradle.groovy.scripts.DefaultScriptProcessor.createScript(DefaultScriptProcessor.java:41)
at org.gradle.api.internal.project.BuildScriptProcessor.createScript(BuildScriptProcessor.java:48)
at org.gradle.api.internal.project.AbstractProject.evaluate(AbstractProject.java:504)
at org.gradle.api.internal.project.AbstractProject.evaluate(AbstractProject.java:42)
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.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:86)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:230)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:912)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:756)
at org.codehaus.groovy.runtime.InvokerHelper.invokePogoMethod(InvokerHelper.java:778)
at org.codehaus.groovy.runtime.InvokerHelper.invokeMethod(InvokerHelper.java:758)
at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodN(ScriptBytecodeAdapter.java:170)
at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethod0(ScriptBytecodeAdapter.java:198)
at org.gradle.configuration.BuildConfigurer$_closure1.doCall(BuildConfigurer.groovy:44)
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.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:86)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:230)
at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:248)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:756)
at groovy.lang.Closure.call(Closure.java:292)
at org.codehaus.groovy.runtime.ConvertedClosure.invokeCustom(ConvertedClosure.java:48)
at org.codehaus.groovy.runtime.ConversionHandler.invoke(ConversionHandler.java:72)
at $Proxy0.execute(Unknown Source)
at org.gradle.api.internal.project.AbstractProject.applyActions(AbstractProject.java:476)
at org.gradle.api.internal.project.AbstractProject.allprojects(AbstractProject.java:471)
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.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:86)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:230)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:912)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:756)
at org.codehaus.groovy.runtime.InvokerHelper.invokePogoMethod(InvokerHelper.java:778)
at org.codehaus.groovy.runtime.InvokerHelper.invokeMethod(InvokerHelper.java:758)
at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodN(ScriptBytecodeAdapter.java:170)
at org.gradle.configuration.BuildConfigurer.process(BuildConfigurer.groovy:51)
at org.gradle.Gradle.runInternal(Gradle.java:115)
at org.gradle.Gradle.run(Gradle.java:93)
at org.gradle.Main.execute(Main.java:232)
at org.gradle.Main.main(Main.java:77)
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.gradle.BootstrapMain.main(BootstrapMain.java:53)

BUILD FAILED

Total time: 1.207 secs
colin-yatess-macbook-pro:nested-web colinyates$ gradle -v

----------------------------------------
Gradle 0.5.2
----------------------------------------

Gradle buildtime: Thursday, January 8, 2009 10:23:01 PM CET
Groovy: 1.5.6
Ant: Apache Ant version 1.7.0 compiled on December 13 2006
Ivy: 2.0.0-rc2
Java: 1.6.0_07
JVM: 1.6.0_07-b06-57
JVM Vendor: Apple Inc.
OS Name: Mac OS X

Skeleton project attached.