Yesterday I pulled the current source trees for Org and Emacs and compiled as I
usually do ... and everything broke, with Org complaining about mixed versions,
and all kinds of warnings and backtraces and "Invalid function:
compat-declare-version" errors.
After looking at various things I noticed a couple of mild warnings related to
the package compat, which I'd seen for a while (several weeks, at least) but
never bothered about, because everything worked. I thought maybe it was all
connected, what with the new version-checking and such, and indeed "M-x
package-reinstall compat" did the trick and now everything works.
In case someone else has the same problem I thought I'd mention this.
Cheers,
Bill
--
William Denton
https://www.miskatonic.org/
Librarian, artist and licensed private investigator.
Toronto, Canada