Simple sass-maven-plugin configuration and output.

build.out

+ Error stacktraces are turned on.
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building Unnamed - jsmith:test:jar:1.0-SNAPSHOT
[INFO]    task-segment: [sass:update-stylesheets]
[INFO] ------------------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Failed to configure plugin parameters for: org.jasig.maven:sass-maven-plugin:1.1.1



Cause: Cannot assign configuration entry 'gemPaths' to 'class [Ljava.lang.String;' from 'null', which is of type class java.lang.String
[INFO] ------------------------------------------------------------------------
[INFO] Trace
org.apache.maven.lifecycle.LifecycleExecutionException: Error configuring: org.jasig.maven:sass-maven-plugin. Reason: Unable to parse the created DOM for plugin conf
iguration
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:723)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal(DefaultLifecycleExecutor.java:569)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:539)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:348)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
        at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:601)
        at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
        at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
        at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
        at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: org.apache.maven.plugin.PluginConfigurationException: Error configuring: org.jasig.maven:sass-maven-plugin. Reason: Unable to parse the created DOM for pl
ugin configuration
        at org.apache.maven.plugin.DefaultPluginManager.populatePluginFields(DefaultPluginManager.java:1363)
        at org.apache.maven.plugin.DefaultPluginManager.getConfiguredMojo(DefaultPluginManager.java:724)
        at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:468)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)
        ... 17 more
Caused by: org.codehaus.plexus.component.configurator.ComponentConfigurationException: Cannot assign configuration entry 'gemPaths' to 'class [Ljava.lang.String;' fr
om 'null', which is of type class java.lang.String
        at org.codehaus.plexus.component.configurator.converters.AbstractConfigurationConverter.fromExpression(AbstractConfigurationConverter.java:149)
        at org.codehaus.plexus.component.configurator.converters.composite.ArrayConverter.fromConfiguration(ArrayConverter.java:62)
        at org.codehaus.plexus.component.configurator.converters.ComponentValueSetter.configure(ComponentValueSetter.java:247)
        at org.codehaus.plexus.component.configurator.converters.composite.ObjectWithFieldsConverter.processConfiguration(ObjectWithFieldsConverter.java:137)
        at org.codehaus.plexus.component.configurator.BasicComponentConfigurator.configureComponent(BasicComponentConfigurator.java:56)
        at org.apache.maven.plugin.DefaultPluginManager.populatePluginFields(DefaultPluginManager.java:1357)
        ... 20 more
[INFO] ------------------------------------------------------------------------
[INFO] Total time: < 1 second
[INFO] Finished at: Tue May 28 11:30:52 PDT 2013
[INFO] Final Memory: 11M/490M
[INFO] ------------------------------------------------------------------------

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>jsmith</groupId>
  <artifactId>test</artifactId>
  <version>1.0-SNAPSHOT</version>

  <build>
    <pluginManagement>
      <plugins>
        <plugin>
          <groupId>org.jasig.maven</groupId>
          <artifactId>sass-maven-plugin</artifactId>
          <version>1.1.1</version>
        </plugin>
      </plugins>
    </pluginManagement>
    <plugins>
      <plugin>
        <groupId>org.jasig.maven</groupId>
        <artifactId>sass-maven-plugin</artifactId>
        <version>1.1.1</version>
        <configuration>
          <sassSourceDirectory>${project.build.directory}/src/main/themes</sassSourceDirectory>
<!--
          <gemPaths>
            <gemPath>"${project.build.directory}/rubygems"</gemPath>
          </gemPaths>
-->
        </configuration>
        <executions>
          <execution>
            <goals>
              <goal>update-stylesheets</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>
</project>