The article below will detail how to deal with antivirus false positives when installing the cloud retailer POS.  


When installing Cloud Retailer POS we've recently witnessed the installation of Microsoft SQL 2014 as part of our process trigger AVG or Avast to block the installation.  This is a false positive.  The IPD.ALEXA.51 infection has been highly criticizedon the web as commonly occurring as a false positive with other applications as well.

You'll need to disable the virus protection temporarily to install the application.  Once done you should re-enable the virus protection and fully scan your system to ensure no legitimate threat exists on your system.