title: Simple Groovy with Geb script
body: <p>I am trying to learn Geb and on my Mac I created a groovy script and tried to run it. I getting errors about grapes not being able to download some dependencies. Do I need to do something special for this to work? </p>
  
  <pre><code>@Grab(group='org.codehaus.geb', module='geb-core', version='0.7.1')
  @Grab(group='org.seleniumhq.selenium', module='selenium-firefox-driver', version='2.31.0')
  
  import geb.*
  import org.openqa.selenium.firefox.FirefoxDriver
  
  Browser.drive(driver: new FirefoxDriver()) {
      go "http://ebay.com/"
      $('input#gh-ac').value("transformers")
      $('input#gh-btn').click()
      sleep 10000
  }
  </code></pre>
  
  <p>Here is the error message I am getting.</p>
  
  <pre><code>org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
  General error during conversion: Error grabbing Grapes -- [download failed: org.apache.httpcomponents#httpclient;4.2.1!httpclient.jar, download failed: org.apache.httpcomponents#httpcore;4.2.1!httpcore.jar]
  
  java.lang.RuntimeException: Error grabbing Grapes -- [download failed: org.apache.httpcomponents#httpclient;4.2.1!httpclient.jar, download failed: org.apache.httpcomponents#httpcore;4.2.1!httpcore.jar]
      at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
      at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
      at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
      at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
      at org.codehaus.groovy.reflection.CachedConstructor.invoke(CachedConstructor.java:77)
      at org.codehaus.groovy.reflection.CachedConstructor.doConstructorInvoke(CachedConstructor.java:71)
      at org.codehaus.groovy.runtime.callsite.ConstructorSite$ConstructorSiteNoUnwrap.callConstructor(ConstructorSite.java:81)
      at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallConstructor(CallSiteArray.java:57)
      at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callConstructor(AbstractCallSite.java:182)
      at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callConstructor(AbstractCallSite.java:190)
      at groovy.grape.GrapeIvy.getDependencies(GrapeIvy.groovy:411)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
      at java.lang.reflect.Method.invoke(Method.java:597)
      at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite$PogoCachedMethodSite.invoke(PogoMetaMethodSite.java:231)
      at org.codehaus.groovy.runtime.callsite.PogoMetaMethodSite.callCurrent(PogoMetaMethodSite.java:52)
      at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:49)
      at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:133)
      at groovy.grape.GrapeIvy.resolve(GrapeIvy.groovy:546)
      at groovy.grape.GrapeIvy$resolve$0.callCurrent(Unknown Source)
      at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:49)
      at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:133)
      at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:153)
      at groovy.grape.GrapeIvy.resolve(GrapeIvy.groovy:515)
      at groovy.grape.GrapeIvy$resolve.callCurrent(Unknown Source)
      at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:49)
      at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:133)
      at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:149)
      at groovy.grape.GrapeIvy.grab(GrapeIvy.groovy:254)
      at groovy.grape.Grape.grab(Grape.java:141)
      at groovy.grape.GrabAnnotationTransformation.visit(GrabAnnotationTransformation.java:312)
      at org.codehaus.groovy.transform.ASTTransformationVisitor$3.call(ASTTransformationVisitor.java:319)
      at org.codehaus.groovy.control.CompilationUnit.applyToSourceUnits(CompilationUnit.java:912)
      at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:575)
      at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:551)
      at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:528)
      at groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:279)
      at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:258)
      at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:244)
      at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:185)
      at groovy.lang.GroovyShell$2.run(GroovyShell.java:206)
      at groovy.lang.GroovyShell$2.run(GroovyShell.java:204)
      at java.security.AccessController.doPrivileged(Native Method)
      at groovy.lang.GroovyShell.run(GroovyShell.java:204)
      at groovy.lang.GroovyShell.run(GroovyShell.java:150)
      at groovy.ui.GroovyMain.processOnce(GroovyMain.java:588)
      at groovy.ui.GroovyMain.run(GroovyMain.java:375)
      at groovy.ui.GroovyMain.process(GroovyMain.java:361)
      at groovy.ui.GroovyMain.processArgs(GroovyMain.java:120)
      at groovy.ui.GroovyMain.main(GroovyMain.java:100)
      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.tools.GroovyStarter.rootLoader(GroovyStarter.java:106)
      at org.codehaus.groovy.tools.GroovyStarter.main(GroovyStarter.java:128)
  
  1 error
  </code></pre>
  
  <p>Thanks for any help.</p>