OSGI example fails when maven-bundle-plugin deploys it - maven

Question

I'm working through an example in the book "OSGi and Apache Felix 3.0". During the maven deploy phase it fails with this message:
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy (default-deploy) on project bookshelf-inventory-api:
Execution default-deploy of goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy failed:
Plugin org.apache.maven.plugins:maven-deploy-plugin:2.7 or one of its dependencies could not be resolved:
The repository system is offline but the artifact org.codehaus.plexus:plexus-utils:jar:1.5.6 is not available in the local repository.
What is this telling me and is there a work-around?
Here is my pom.xml:
<groupId>osgi.example</groupId>
<artifactId>bookshelf-inventory-api</artifactId>
<version>1.0.0</version>
<packaging>bundle</packaging>
<dependencies>
<dependency>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<version>2.4.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<inherited>true</inherited>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<version>2.4.0</version>
<extensions>true</extensions>
<configuration>
<instructions>
<Bundle-Category>inventory</Bundle-Category>
<Bundle-SymbolicName>${artifactId}</Bundle-SymbolicName>
<Export-Package>osgi.example.bookshelf.inventory.api</Export-Package>
</instructions>
<remoteOBR>repo-rel</remoteOBR>
<prefixUrl>file:///C:/home/src/demo/osgi/felix-3-book/releases</prefixUrl>
<ignoreLock>true</ignoreLock>
<!--
<instructions>
<Private-Package>org.foo.myproject.*</Private-Package>
<Bundle-Activator>org.foo.myproject.impl1.Activator</Bundle-Activator>
</instructions>
-->
</configuration>
</plugin>
</plugins>
</build>
<distributionManagement>
<!-- releases repo -->
<repository>
<id>repo-rel</id>
<url>file:///C:/home/src/demo/osgi/felix-3-book/releases</url>
</repository>
</distributionManagement>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>

Answer 1

The message is saying that you are trying to build in offline mode (-o) and there are a dependency that couldn't be found: org.codehaus.plexus:plexus-utils:jar:1.5.6
if is not the case and you are online getting this message, try to remove the ~/.m2/org/codehaus/plexus and try again. maybe the file was downloaded with errors.