Trying to install GNU Octave 3.8.2 for Windows

Trying to install GNU Octave 3.8.2

Running Avast Free Antivirus 2015.10.0.2208

http://wiki.octave.org/Octave_for_Microsoft_Windows

Tried to install several times. Avast flags the install and deletes the install executable.

Is there a way to disable this?

I just tested it and the download/installation went without a problem.
Using avast 2015.10.2.2214