I've been using Toucan for several years without problems. Thanks for all your work.
Today, I tried to start Toucan, saw the PortableApps splash screen, then an alert (image attached) saying:
*** Caught unhandled unknown exception; terminating
Uninstalled, downloaded new, tried again (repeatedly) - the same each time.
The only system change I'm aware of since I last used Toucan is the latest Win 10 update.
