Hello slcoleman & Qubes Community,
Thanks for your quick reply!
However, when I try to list the available templates using the ‘qvm-template’ command, I get the same error message:
[vr@dom0 ~]$ qvm-template list
[Qrexec] /bin/sh: /etc/qubes-rpc/qubes.TemplateSearch: No such file or directory
ERROR: qrexec call ‘qubes.TemplateSearch’ failed.
[vr@dom0 ~]$
I just checked my own system and ran a python3 trace on the command. The file /etc/qubes-rpc/qubes.TemplateSearch should be on the sys-firewall , assuming the default configuration. If you use a different OS or changed your “Dom0 update qube” in the “Global Settings” for dom0 updates then that update VM may not have this file installed. I would start by looking there.
I’ve not modified anything - and - the “Global Settings” look OK.
I tried to open a console in ‘sys-firewall’ - but - can’t login 
I had expected that I could do so, using my credentials, i.e. user ‘vr’ plus my password …
FYI-#1: I have performed an ‘in-place-upgrade’ from 4.0 to 4.1 a little bit over a week ago - and - did not notice any issues, other than this one …
FYI-#2: Here are the installed packages from dom0:
xen_version : 4.14.5
Linux 5.10.112-1.fc32.qubes.x86_64
Installed Packages:
grub2-qubes-theme.x86_64 5.14.4-2.fc32
kernel-qubes-vm.x86_64 1000:5.4.156-1.fc25.qubes
kernel-qubes-vm.x86_64 1000:5.4.190-1.fc25.qubes
kernel-qubes-vm.x86_64 1000:5.10.112-1.fc32.qubes
python2-qubesadmin.noarch 4.0.32-1.fc25
python2-qubesimgconverter.x86_64 4.0.31-1.fc25
python3-qubesadmin.noarch 4.1.23-1.fc32
python3-qubesdb.x86_64 4.1.13-1.fc32
python3-qubesimgconverter.x86_64 4.1.16-1.fc32
qubes-anaconda-addon.noarch 4.1.8-1.fc32
qubes-artwork.noarch 4.1.12-1.fc32
qubes-artwork-plymouth.noarch 4.1.12-1.fc32
qubes-audio-daemon.x86_64 4.1.21-1.fc32
qubes-audio-dom0.x86_64 4.1.21-1.fc32
qubes-core-admin-addon-whonix.noarch 4.1.1-1.fc32
qubes-core-admin-client.noarch 4.1.23-1.fc32
qubes-core-dom0.noarch 4.1.27-1.fc32
qubes-core-dom0-linux.x86_64 4.1.21-1.fc32
qubes-core-dom0-linux-kernel-install.x86_64 4.1.21-1.fc32
qubes-core-qrexec.x86_64 4.1.18-1.fc32
qubes-core-qrexec-dom0.x86_64 4.1.18-1.fc32
qubes-core-qrexec-libs.x86_64 4.1.18-1.fc32
qubes-db.x86_64 4.1.13-1.fc32
qubes-db-dom0.x86_64 4.1.13-1.fc32
qubes-db-libs.x86_64 4.1.13-1.fc32
qubes-desktop-linux-common.noarch 4.1.12-1.fc32
qubes-desktop-linux-manager.noarch 4.1.14-1.fc32
qubes-dist-upgrade.noarch 4.0.6-1.fc25
qubes-gpg-split-dom0.x86_64 2.0.59-1.fc32
qubes-gui-daemon.x86_64 4.1.21-1.fc32
qubes-gui-dom0.x86_64 4.1.21-1.fc32
qubes-img-converter-dom0.x86_64 1.2.11-1.fc32
qubes-input-proxy.x86_64 1.0.26-1.fc32
qubes-input-proxy-receiver.x86_64 1.0.26-1.fc32
qubes-libvchan-xen.x86_64 4.1.7-1.fc32
qubes-manager.noarch 4.1.23-1.fc32
qubes-menus.noarch 4.1.12-1.fc32
qubes-mgmt-salt.noarch 4.1.14-1.fc32
qubes-mgmt-salt-admin-tools.noarch 4.1.14-1.fc32
qubes-mgmt-salt-base.noarch 4.1.4-1.fc32
qubes-mgmt-salt-base-config.noarch 4.1.1-1.fc32
qubes-mgmt-salt-base-overrides-libs.noarch 4.0.2-1.fc25
qubes-mgmt-salt-base-topd.noarch 4.1.3-1.fc32
qubes-mgmt-salt-config.noarch 4.1.14-1.fc32
qubes-mgmt-salt-dom0.noarch 4.1.14-1.fc32
qubes-mgmt-salt-dom0-qvm.noarch 4.1.4-1.fc32
qubes-mgmt-salt-dom0-update.noarch 4.1.8-1.fc32
qubes-mgmt-salt-dom0-virtual-machines.noarch 4.1.16-1.fc32
qubes-pdf-converter-dom0.x86_64 2.1.12-1.fc32
qubes-release.noarch 4.1-1
qubes-release-notes.noarch 4.1-1
qubes-repo-templates.noarch 4.1.2-1.fc32
qubes-rpm-oxide.x86_64 0.2.4-1.fc32
qubes-usb-proxy-dom0.noarch 1.1.1-1.fc32
qubes-utils.x86_64 4.1.16-1.fc32
qubes-utils-libs.x86_64 4.1.16-1.fc32
qubes-windows-tools.noarch 4.1.68-1
xfce4-settings-qubes.x86_64 4.0.5-2.fc32
Any feedback on what else I should try is highly appreciated!
With kind regards,
Viktor