*** Caught unhandled unknown exception; terminating

[MY1L]

I've seen #41 #40 #34 #25 , but no one answers.

been using toucan 2.2.1.0 since 2018, always available, until last month.

now I've tried running releases 2.2.1.0 (PortableApp), 3.1.8 (GitHub), 3.1.8.2 (PortableApp) on Win8.1x64(zh_CN) in C:\PortableApps\Toucan (2.2.1.0, 3.1.8.2) & D:\Toucan (3.1.8, installing again, without PortableApps framework). no antivirus protection on this machine. And check Windows Event Log, nothing, not even CrashDumps.

All 3 releases crash with an error window which states:

How can I discover what is creating this problem?