Which exactly the version you have? I tested it with 2017-04-26 and everything is OK, I can enter text only rows. Do you really have the VAT code column empty on the text row?
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...
