The buckminster plugin relies on the 'java' executable being in the system path variable.
That raises 2 issues:
1. If java is not in the path, the plugin cannot be used
2. You cannot use another java than the one in the system path
Steps to reproduce:
1. remove the path to the java executable from the system's path
2. execute any build with a buckminster build step
The plugin needs to get the full path to java from hudson