The Wiki section on upgrading should help you with compatibility.
For a few major releases now, the policy is that the last minor release of a series will be able to read a file from the next major release.
So whatever the last 3.x was, *should* be able to read a 4.x file. But if there is no reason to not upgrade all machines to the one that matches, the file, I'd just go ahead and do so.
Regards, Adrien On 12/3/21 10:52 AM, Dr. David Kirkby wrote:
Thank you. There are a huge number of changes. I've just downloaded the Windows version, and will look at recompiling the latest version version on Linux. At least I should be able to move a file between windows and Linux - I assume that saving a version in 4.x, then trying to read that in 3.x, might well cause a problem.
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