Yuna Software is in contact with people at Eset (makers of NOD32) to try and solve the issue. Unfortunately it is a very slow process.
Also note:
- NOD32 classifies Win32/MessengerPlus as a "potentially unwanted application" (orange) and not as a "threat" (red).
- The folks at Eset said their reason for flagging Plus! was for the old (optional) CiD sponsor Plus! used in the past. This sponsor isn't used anymore in any of the recent Plus! versions.
- Other security products which started flagging Messenger Plus! in the same timeframe as Eset already investigated the issue and confirmed Plus! is not insecure or malicious. See the reports from: Norton Safe Web, hpHosts and Malwarebytes.
- NOD32 is the only known anti-virus product to have a problem with Messenger Plus!, dozens of other notable products all label it safe: VirusTotal MsgPlusLive-490.exe scanning results.
This is very annoying, but as long as the people at Eset don't change their mind there is nothing else you can do except for disabling NOD32 for the few minutes it takes to install Plus!. People at Yuna Software are already in contact with Eset too, but if you wish to complain to Eset you can reach them through this way:
How to submit virus or potential false positive samples to ESET's labs
To work around this issue you can either
disable the detection of "potentially unwanted applications. Or, temporary disabling NOD32 will do too. Although it does take a couple more steps than Eset says it will:
- Doubleclick on the NOD32 icon in the systray next to the clock in the lower-right of your screen. On Windows 7 in some cases the NOD32 icon is hidden behind the little up arrow next to the clock.
- In the lower-left of the NOD32 windows click 'Change' to toggle to 'Advanced mode'.
- Once you're in advanced mode, click on 'Setup' and then 'Antivirus and antispyware protection'.
- You should see the status of all 4 of NOD32's components, click on 'Disable' under all 4 of these components.
- Now you should be able to download Plus! and install it without any problem.
- Once you are done you can delete the installer file and re-enable NOD32. Only the installer is flagged by NOD32, Plus! works fine once it is installed, even with NOD32 on its highest settings.