It's a little bit under protest that I'm submitting this error, because it kind of creeps me out that I have to compile all drools projects from root just to get drools planner samples to compile in my IDE, but Geoffrey asked - and I am highly appreciative of everything he and the drools team is doing. it also doesn't appear that hudson has been building either, so not sure why my input even matters.... Anyway here is the error I am getting trying to compile drools on my box (java 1.6) [INFO] Copying 1 resource [INFO] [compiler:compile] [INFO] Compiling 237 source files to C:\work\deleteDroolsSolverExperiment\jbossr ules\drools-api\target\classes [INFO] ------------------------------------------------------------------------ [ERROR] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Compilation failure Failure executing javac, but could not parse the error: 'javac' is not recognized as an internal or external command, operable program or batch file. Failure executing javac, but could not parse the error: 'javac' is not recognized as an internal or external command, operable program or batch file. I've been a lurker on drools for years and it's always been challenging for me to be involved with because I never have more than a couple hours at a time to work past the issues, then I'm all out of time and never get a chance to really use it in a program. I'll be there are a lot more people that fit this profile than not.