I've figured out why this error did not happen to me at my home PC. I'm using desktop-save-mode, and at work it loaded some buffer that enables yasnippet support, thus immediately producing error. At home I mostly work with text files, that I don't enable snippets, so error got unnoticed.

I've set `debug-on-error' to t, and here's the trace:

On Tue, Jun 30, 2020 at 1:20 PM Andrea Corallo <andrea_corallo@yahoo.it> wrote:

Mmh strange, here seams back stable since yesterday's fix.

Perhaps you can make sure the all the old eln has been removed
(including the one related to the packages).

The way to debug is to identify the function that is failing, build a reproducer and see
what's going wrong, I know is a bit generic tho :/

If you find a reproducer I'll jump into.

Thanks!

Andrea