It's one of those things that I really dislike.... learning some new piece of software because the old version is being upgraded and the company won't be supporting it any more (think Microsoft Windows for an example). Because of this and because I have a thrifty streak that says, if it works why do I need to replace it, I have some older software on my laptop that I am very comfortable using.
The problem is twice I've needed to fix or replace something and the old version was no longer available for download.
I came across this resource from the website 'Make Use Of", a list of 10 websites that have links to older versions of software for both PC and Macs.
This is one of those tech tips that's good to keep on hand, just in case.