Instruct: Classify the given review as either positive or negative.
Query: Software messes up computer

The software installs ok - although it makes you install Microsoft VM (MSFT's version of Java that they were forced to recall after litigation), and disable Sun Java. This may not matter to some as not too may websites are written in Java anymore - they use Flash. it really bothers me that I was forced to install an archaic, unsupported JVM to run this program.The book did it's job - it taught me the basics of G-Code. I was disappointed that the simulator did not understand some g-codes and required spaces between each parameter.I wish I read the previous reviews - I would have saved $50. Now to fix my computer . . .