Michael, You can save copies of the Make.header files by selecting Save As. Overwrite the files. You will be prompted that the file exists and not to overwrite it. Overwrite it. I've noticed this with other compilers. On occasion, you have to exit the program. Then, open the project file again. In this case: hello_world.jcc I hope this helps. -- Roman Registered Linux User #179293 High Energy Penguin Powered Email