Apologies for the priority.

The Grails plugin is incorrectly failing with the error "FATAL: D:\grails-1.2.1\bin\grails.bat doesn't exist". The path does exist and is executable.

It appears that this check is happening on the master not the slave where it will be executed. The code seems to support that theory. In GrailsBuilder.java there is a line"if (!grailsInstallation.getExists()) {" which will execute on the master, not the slave.

Have a good day!