When the system decimal separator is comma (",") it raises an error. See screenshot below. <img width="740" height="319" alt="Image" src="https://github.com/user-attachments/assets/3e9f51d6-c731-4c18-8bf7-7f03ab8f336c" /> Maybe the below works when creating the mainform. Application.UpdateFormatSettings := false; FormatSettings.DecimalSeparator := '.'; ### Tested in Windows x64 ###