There is no central list I’m afraid, and this same problem of course also happens on files written on Rhino6 on Windows, or whenever a file was saved using a plugin which is not available. This is very annoying and there’s no solution for the time being.
You can always try and replace a new component with an obsolete one whenever someone tells you your file doesn’t open. You can access obsolete components by typing a # into the double-click-pop-up first:
ps. if you were to consider upgrading soon, you can probably get a much better deal now than later.