RomRaider

I've started thinking about live tuning with Merpmod, and am having issues getting RR to compile when I follow the guide here: http://www.romraider.com/RomRaider/GettingStarted

I follow the steps as provided, and get the following when I try to build RR:

BUILD FAILED
C:\Users\aijii\git\RomRaider\build.xml:121: taskdef class net.sf.launch4j.ant.Launch4jTask cannot be found
using the classloader AntClassLoader[C:\Users\aijii\git\RomRaider\3rdparty\launch4j\lib\xstream.jar]

Any suggestions ? I've never used Eclipse... help would be appreciated

I assume you verified that you have that Jar accessible in the path relative to the RomRaider directory?
"3rdparty\launch4j\lib\xstream.jar"

In the build.xml it is defined as:
classpath="${launch4j.dir}/launch4j.jar:${launch4j.dir}/lib/xstream.jar"/>

where ${launch4j.dir} is:
<property name="launch4j.dir" location="${3rdparty.dir}/launch4j"/>

and ${3rdparty.dir} is:
<property name="3rdparty.dir" value="${basedir}/3rdparty"/>

and ${basedir} is:
basedir="."
the directory where the build.xml file lives.

Yours [C:\Users\aijii\git\RomRaider\3rdparty\launch4j\lib\xstream.jar] evaluates similar to my path.

You could also share the build output details just in case something else pops up.