Some versions of Trend Micro Antivirus detect pak_generic.001 in the octopus.msi or support.zip.
This is a false positive alarm of TrendMicro. pak_generic.001 is triggered because octoscan2.exe contained in the installation file is a UPX packed executable.
Workaround: Configure your Antivirus Software so that pak_generic.001 detection alone does trigger a virus detection.
We test the setup files with www.virustotal.com before we release it to the filebase. Out of the currently 49 antivirus engines on virustotal.com, only Trend Micro triggers the false positive.
More info abuot UPX packer: http://upx.sourceforge.net