Extracting nagvis error installation

I have a problem in extracting nagvis in this step…
tar xvzf nagvis-1.4.7.tar.gz /tmp
even i use
tar xvzf nagvis-1.4.7.tar.gz /tmp

have you tried downloading again?

I think that You have not downgraded in current format. So I want to say that You have check it and download it in the right format. I hope that You will get it as well as far.

I also have downloaded nagvis and also facing some problems. I have checked everything but can not understand the main problem in getting it. I have checked version detail also and it is perfect also according to my laptop os and applications. So please help me in solving so that I can use it.