On top of having the custom register added to the interface (register's LClass defined for a specific module in Startup).. interface languages matter as well.
Make sure to add the custom register also under:
SetLangMode(LangEnglish,"ENG",0);
Hello,
We also have a customer on windows who is on 2026-02-28 having the exact same error message after updating.
The title of the messagebox is in our case is: "C:\Program Files(x86)\Han...
