Win32:Malware_gen - false positive?

Hi. I recently purchased a desktop CNC machine. When I tried to load the bundled software, AVG reported :-
"We moved 1610 CNC Machine.exe to your quarantine because it was infected with Win32:Malware_gen"
I contacted the manufacturers & advised them of this. Their advice was to switch off my antivirus as the software was "ok". That I find difficult to do - I trust AVG & if it tells me there is something wrong, I tend to believe it. However I see there are a number of reports on false positives so I wondered how I(or anyone else) could identify a false positive from a genuine nasty?

If you need any more information, can you contact me on my e-mail address, please?

Thanks
Andy

Hello Andy,

I understand the situation.
Yes, I can send you email, if you are in need of further assistance.
Due to security reasons, AVG will block some of the applications or detect them as a threat.
However, if they are trusted, it can be added to exceptions and sample can be sent for analysis.
For adding exceptions, refer this article: http://support.avg.com/SupportArticleView?urlname=How-to-make-exclusions-from-all-scans-and-shields .
For whitelisting the application, submit the information through this link: https://www.avg.com/whitelist-program-application .
Thank you.

Hello Andy,

I understand the situation.
Yes, I can send you email, if you are in need of further assistance.
Due to security reasons, AVG will block some of the applications or detect them as a threat.
However, if they are trusted, it can be added to exceptions and sample can be sent for analysis.
For adding exceptions, refer this article: http://support.avg.com/SupportArticleView?urlname=How-to-make-exclusions-from-all-scans-and-shields .
For whitelisting the application, submit the information through this link: https://www.avg.com/whitelist-program-application .
Thank you.