I previously used ardour under Ubuntu from debian packages, which will have been version 5.12 according to https://packages.ubuntu.com/bionic/ardour (I am running ubuntu bionic). Now I donated and downloaded the latest official binary release from ardour.org.
After installing it, it found my old config and asked me to import it. (Which I assume might be the problem)
Now the program starts until the project selection screen and afterwards crashes after a while.
Ardour6.3.0 (built using 6.3 and GCC version 6.3.0 20170516)
Ardour: [INFO]: Your system is configured to limit Ardour to 1048576 open files
Ardour: [INFO]: Loading system configuration file /opt/Ardour-6.3.0/etc/system_config
Ardour: [INFO]: Loading user configuration file /home/ch/.config/ardour6/config
Ardour: [INFO]: CPU vendor: GenuineIntel
Ardour: [INFO]: AVX-capable processor
Ardour: [INFO]: CPU brand: Intel(R) Core(TM) i7-4600U CPU @ 2.10GHz
Ardour: [INFO]: Using AVX optimized routines
Ardour: [INFO]: Loading plugin meta data file /opt/Ardour-6.3.0/share/plugin_metadata/plugin_tags
Cannot xinstall SIGPIPE error handler
Ardour: [INFO]: Loading default ui configuration file /opt/Ardour-6.3.0/etc/default_ui_config
Ardour: [INFO]: Loading user ui configuration file /home/ch/.config/ardour6/ui_config
Ardour: [INFO]: Loading 449 MIDI patches from /opt/Ardour-6.3.0/share/patchfiles
Gtk-Message: Failed to load module "canberra-gtk-module"
Ardour: [INFO]: Loading color file /opt/Ardour-6.3.0/share/themes/dark-ardour.colors
Ardour: [INFO]: Loading ui configuration file /opt/Ardour-6.3.0/etc/clearlooks.rc
Ardour: [INFO]: Loading bindings from /opt/Ardour-6.3.0/etc/ardour.keys
Loading ui configuration file /opt/Ardour-6.3.0/etc/clearlooks.rc
Found nothing along /home/ch/.config/ardour6/templates:/opt/Ardour-6.3.0/share/templates
protocol Wiimote not found
free(): invalid pointer
Aborted (core dumped)
My questions are: Do you think this can be solved by resetting the configuration? And how can I do so? Will I be able to work on my old projects?