[tor-talk] An external application is needed...

[Tor User0000]

Hi,

I was always wondering why I get the following pop-up message when
downloading a file. And it does not happen all the time. Why it says that
an external app is needed when only opening the download window?

*An external application is needed to handle:

https://www.torproject.org/dist/torbrowser/linux/tor-browser-gnu-linux-i686-2.2.35-7.2-dev-en-US.tar.gz

NOTE: External applications are NOT Tor safe by default and can unmask you!

If this file is untrusted, you should either save it to view while offline
or in a VM,
or consider using a transparent Tor proxy like Tails LiveCD or torsocks.

*Thanks for the help! :-)*
*