On November 11th Interspire announced the release of version 6.1.6 of Email Marketer. The below is a quote from the post on the official customer forums. I’m especially glad to hear they have updated the charts to no longer require flash.
Version: 6.1.6
Released: 11th November, 2015– Replaced flash charts with javascript charts
– Changed minimum PHP requirement to 5.5
– Fixed errors/notices generated by deprecated code
– Fixed several security vulnerabilities
– Fixed several minor bugs and minor code cleanup