Maven – Unable to load the mojo – maven install

I am trying to install a maven project at work and getting the following error. A bit of googling shows other people with the mojo problem, but none with the specific maven-war-plug and MavenFilteringException.

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-war-plugin:2.1.1:war (default-war) on project genericIntegrationServer: Executio
n default-war of goal org.apache.maven.plugins:maven-war-plugin:2.1.1:war failed: Unable to load the mojo 'war' in the plugin 'org.apache.maven.plugin
s:maven-war-plugin:2.1.1'. A required class is missing: org/apache/maven/shared/filtering/MavenFilteringException

Apache Maven 3.0.3 (r1075438; 2011-02-28 17:31:09+0000)

Maven home: C:\dev\apache-maven-3.0.3\bin..

Java version: 1.6.0_19, vendor: Sun Microsystems Inc.

Java home: c:\dev\jdk\1.6\1.6.0_19\jre

Default locale: en_GB, platform encoding: Cp1252

OS name: "windows 7", version: "6.1", arch: "x86", family: "windows"