Virus problem?

[Peter47]

When I attempt to download the Arizona topo map (Editor's choice) my anti virus software (Avast) issues a warning and blocks the operation. I think that the same happened with the Nevada map. California and Oregon downloaded without problems

[-Oz-]

This is a new "feature" of Avast Free.

Avast updated their software to flag files it hasn't analyzed frequently enough and it is causing problems for this software and a lot of others.  If you turn off the "DeepScreen" setting this error (and errors with other software it hasn't analyzed enough) will go away. 
Per: http://forum.avast.com/index.php?topic=125057.0

There are not viruses in those maps.

[-Oz-]

Here is more on this issue; it is pretty large and affecting a lot of websites: http://forum.avast.com/index.php?topic=143341.0

And was automatically enabled in the 2014 version.
https://feedback.avast.com/responses/deepscan-needs-customizable-options

[hikerbobmoore]

I unclicked Deep Screen and Avast still blocked me from downloading the Arizona topo.

[plsquid223]

I notice there's a new posting on this, also.  I scanned the file with antimalwarebytes and of course it was negative. I installed it sandboxed and didn't see anything bad happening.  I'm convinced its a false positive.

But it would be a great attack vector, and I wonder if you would consider posting an md5 hash of the files available...at least someone attacking your website would have to change two things

I'd suggest either starting a new heading or making this sticky.

[-Oz-]

Stickied