Hi Michael,

I had tried multiple versions of tramp. I checked my elpa/ and saw I had tried tramp 2.5.1 and 2.5.1.1 earlier. Now that I renamed my elpa/ folder to elpa-bak/, emacs is using the built-in 2.4.5.27.2. I now tried installing the latest tramp via emacs menu Options>Manage Emacs Packages> and then selecting tramp 2.5.1.1 from there and clicking install. It gives me an error, please see below. This is with "GNU Emacs 27.2 (build 1, x86_64-apple-darwin18.7.0, NS appkit-1671.60 Version 10.14.6 (Build 18G95)) of 2021-03-27".
Install package ‘tramp-2.5.1.1’? y

Contacting host: elpa.gnu.org:443
Parsing tar file...done
Extracting...done
  INFO     Scraping files for tramp-autoloads.el...
Generating autoloads for tramp-adb.el...done
Generating autoloads for tramp-archive.el...done
Generating autoloads for tramp-cache.el...done
Generating autoloads for tramp-cmds.el...done
Generating autoloads for tramp-compat.el...done
Generating autoloads for tramp-crypt.el...done
Generating autoloads for tramp-ftp.el...done
Generating autoloads for tramp-fuse.el...done
Generating autoloads for tramp-gvfs.el...done
Generating autoloads for tramp-integration.el...done
Generating autoloads for tramp-pkg.el...done
Generating autoloads for tramp-rclone.el...done
Generating autoloads for tramp-sh.el...done
Generating autoloads for tramp-smb.el...done
Generating autoloads for tramp-sshfs.el...done
Generating autoloads for tramp-sudoedit.el...done
Generating autoloads for tramp-uu.el...done
Generating autoloads for tramp.el...done
Generating autoloads for trampver.el...done
  INFO     Scraping files for tramp-autoloads.el...done
Wrote /Users/mkancherla/.emacs.d/elpa/tramp-2.5.1.1/tramp-autoloads.el [2 times]
Error in package--load-files-for-activation: (void-function tramp-register-crypt-file-name-handler)
tramp-register-file-name-handlers: Symbol’s function definition is void: tramp-register-crypt-file-name-handler

Mani


On Sat, Aug 28, 2021 at 1:13 AM Michael Albinus <michael.albinus@gmx.de> wrote:
Mani Kancherla <kancherla.mani@gmail.com> writes:

Hi Mani,

> I just did one more quick test. I renamed .emacs.d/elpa where I only
> have the newer version tramp to .emacs.d/elpa-bak. That seems to fix
> the problem.
> Mani
>
>     I verified that "emacs -Q" has no issues. I can reproduce the
>     issue consistently without "-Q". Any information I can collect
>     that will help debug the issue?

Thanks for the feedback. I've tried to reproduce the problem with your
test file and with both Emacs 28.0.50 and 27.2, and the recent Tramp
2.5.2-pre, with no success.

Which Tramp version do you use? Check variable tramp-version.

Has it been compiled for Emacs 27.2? You can check this in
~/.emacs.d/elpa/tramp-<version>/tramp.elc.

Perhaps you deinstall the ELPA Tramp package, and reinstall it (2.5.1.1
is the recent version, will be 2.5.1.2 next days). Does it behave
better?

>     Thanks,
>     Mani

Best regards, Michael.