Bug#881404: unison: has stopped working altogether: ‘Fatal error: End_of_file exception raised in loading archive (this indicates a bug!)’

[Axel Stammler <axst@users.sourceforge.net>]

Package: unison
Version: 2.48.3-1
Severity: important

Dear Maintainer,

That is what happens now whenever I try to use Unison with any profile. It started
suddenly — everything worked perfectly until a few hours ago.

-- System Information:
Debian Release: 9.2
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_IE.UTF-8, LC_CTYPE=en_IE.UTF-8 (charmap=UTF-8), LANGUAGE=en_IE:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages unison depends on:
ii  libc6  2.24-11+deb9u1

Versions of packages unison recommends:
ii  openssh-client [ssh-client]  1:7.4p1-10+deb9u1

Versions of packages unison suggests:
pn  unison-all  <none>

-- debconf-show failed