Thanks, I was able to get things installed using Helios 3.6 M5.
I'm finding some issues trying to display diagram for the Calculator
composite, logs and composite are available at [1][2].
I also tried store.composite [3] and got similar results.
[1] http://people.apache.org/~lresende/tuscany/stp_tools.log
[2] https://svn.apache.org/repos/asf/tuscany/sca-java-2.x/trunk/samples/calculator/src/main/resources/Calculator.composite
[3] https://svn.apache.org/repos/asf/tuscany/sca-java-2.x/trunk/samples/store/src/main/resources/store.composite