Can't install Unity (615713)

I an getting this error:

MIME type ‘application/vnd.debian.binary-package’ not supported /home/passarinho/Downloads/unity-editor-5.1.0f3+2015082501_amd64.deb

Installed using [Unofficial Platform-Agnostic Installer.

I think it’s better use .deb when it’s comes official](http://download.unity3d.com/download_unity/unity-editor-installer-5.1.0f3+2015082501.sh)

But if anyone can help me with the .deb will be thankfull

What distribution are you using?

Please download newest version 5.3.1f1 from the bottom of this thread:

& try it.

Yes, it worked… Also, for some reason i was without my main packges repository