How about you...

1. Learn to respect jdownloader programmers. Treat them like human beings. They are making this program without gaining any form financial gain or aren't being compensated. They are making this out of their own free time...Learn to treat them like how you would like to be treated.
2. Have a little bit of patience jeeeze! Use your head! Try out the beta if the stable version doesn't work. I got it to work while updating from the beta.

/rant