nil270000000

I downloaded the iReport-5.6.0.exe version. and i insalled that successfully. I think. tnen, i double cliked iReport-5.6.0 Icon. It seems working good, but It does't work. I am usisg jdk 1.8version. What can I do? and I have one more question. I wnat to use this program for my company system. This program will be used for profit making purpose. Do I need to purchase this program for that? And How can i get the tutorial?