ClassNotFoundException with Grails Spock Plugin

Question

I have a Grails 1.3.7 project and but when I installed the Grails Spock Plugin: I got this:

    Installed plugin spock-0.5-groovy-1.7 to location /Users/tiffany/.grails/1.3.7/projects/grails-with-spock/plugins/spock-0.5-groovy-1.7. ...
Resolving plugin JAR dependencies ...
[Fatal Error] settings.xml:19:2: The markup in the document following the root element must be well-formed.
WARNING: Dependencies cannot be resolved for plugin [spock] due to error: The markup in the document following the root element must be well-formed.
Executing spock-0.5-groovy-1.7 plugin post-install script ...
Plugin spock-0.5-groovy-1.7 installed
   [delete] Deleting directory /Users/tiffany/Workspace/chrome-webstore/grails-with-spock/target/classes
   [delete] Deleting directory /Users/tiffany/.grails/1.3.7/projects/grails-with-spock/plugin-classes
   [delete] Deleting directory /Users/tiffany/.grails/1.3.7/projects/grails-with-spock/resources

And when I tried running a simple domain UnitSpec, I got this stack trace:

[Fatal Error] settings.xml:19:2: The markup in the document following the root element must be well-formed.
WARNING: Dependencies cannot be resolved for plugin [spock] due to error: The markup in the document following the root element must be well-formed.
Resolving dependencies...
Dependencies resolved in 1284ms.
Running script /Users/tiffany/dev/grails/scripts/TestApp.groovy
Environment set to test
    [mkdir] Created dir: /Users/tiffany/.grails/1.3.7/projects/grails-with-spock/plugin-classes
  [groovyc] Compiling 2 source files to /Users/tiffany/.grails/1.3.7/projects/grails-with-spock/plugin-classes
    [mkdir] Created dir: /Users/tiffany/Workspace/chrome-webstore/grails-with-spock/target/classes
  [groovyc] Compiling 7 source files to /Users/tiffany/Workspace/chrome-webstore/grails-with-spock/target/classes
Error executing script TestApp: java.lang.ClassNotFoundException: grails.plugin.spock.test.GrailsSpecTestType
java.lang.ClassNotFoundException: grails.plugin.spock.test.GrailsSpecTestType
    at gant.Gant$_dispatch_closure5.doCall(Gant.groovy:391)
    at gant.Gant$_dispatch_closure7.doCall(Gant.groovy:415)
    at gant.Gant$_dispatch_closure7.doCall(Gant.groovy)
    at gant.Gant.withBuildListeners(Gant.groovy:427)
    at gant.Gant.this$2$withBuildListeners(Gant.groovy)
    at gant.Gant$this$2$withBuildListeners.callCurrent(Unknown Source)
    at gant.Gant.dispatch(Gant.groovy:415)
    at gant.Gant.this$2$dispatch(Gant.groovy)
    at gant.Gant.invokeMethod(Gant.groovy)
    at gant.Gant.executeTargets(Gant.groovy:590)
    at gant.Gant.executeTargets(Gant.groovy:589)
Caused by: java.lang.ClassNotFoundException: grails.plugin.spock.test.GrailsSpecTestType
    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
    at java_lang_ClassLoader$loadClass.call(Unknown Source)
    at _Events$_run_closure1_closure5.doCall(_Events.groovy:18)
    at _Events$_run_closure1.doCall(_Events.groovy:24)
    at _Events$_run_closure2.doCall(_Events.groovy:30)
    at _Events$_run_closure2.doCall(_Events.groovy)
    at _Events$_run_closure3.doCall(_Events.groovy:39)
    at org.apache.tools.ant.BuildListener$targetStarted.call(Unknown Source)
    at TestApp$_run_closure1.doCall(TestApp.groovy:82)
    at gant.Gant$_dispatch_closure5.doCall(Gant.groovy:381)
    ... 10 more
--- Nested Exception ---
java.lang.ClassNotFoundException: grails.plugin.spock.test.GrailsSpecTestType
    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
    at java_lang_ClassLoader$loadClass.call(Unknown Source)
    at _Events$_run_closure1_closure5.doCall(_Events.groovy:18)
    at _Events$_run_closure1.doCall(_Events.groovy:24)
    at _Events$_run_closure2.doCall(_Events.groovy:30)
    at _Events$_run_closure2.doCall(_Events.groovy)
    at _Events$_run_closure3.doCall(_Events.groovy:39)
    at org.apache.tools.ant.BuildListener$targetStarted.call(Unknown Source)
    at TestApp$_run_closure1.doCall(TestApp.groovy:82)
    at gant.Gant$_dispatch_closure5.doCall(Gant.groovy:381)
    at gant.Gant$_dispatch_closure7.doCall(Gant.groovy:415)
    at gant.Gant$_dispatch_closure7.doCall(Gant.groovy)
    at gant.Gant.withBuildListeners(Gant.groovy:427)
    at gant.Gant.this$2$withBuildListeners(Gant.groovy)
    at gant.Gant$this$2$withBuildListeners.callCurrent(Unknown Source)
    at gant.Gant.dispatch(Gant.groovy:415)
    at gant.Gant.this$2$dispatch(Gant.groovy)
    at gant.Gant.invokeMethod(Gant.groovy)
    at gant.Gant.executeTargets(Gant.groovy:590)
    at gant.Gant.executeTargets(Gant.groovy:589)

Has anyone encountered this problem before? And if so, how do I resolve this? I've tried googling but I got nothing >.<

I also tried creating a new Grails app and only installed the Spock Plugin, nothing else. I got the exact same result.

Answer 1

Many of these problems can be solved with a simple grails clean or if even that does not help try to delete the .grails folder in your user directory and run the plugin installation again.