I need to convert a backup from the 2011 version of Sage to the 2020 version and apparently I have to have the 2015 version installed on my computer to do so.
Does anyone have a link to download even a trial version of 2015.
By the way, I asked this question yesterday but my question was deleted for some reason (someone had posted a response that didn't solve the problem). Sorry if this breaks some kind of rule.