Each locale has its own specifics. Date formats, number writing methods, etc. For example, our locale uses a decimal point instead of a decimal point. All software respects this because it is a basic Windows setting. However, this program has it wrong somewhere and uses 0.1 with a decimal point, so I enter values in the form with a decimal point, it works, but saving throws an error with the number format 0.1, which is a value that I do not enter and is probably used somewhere in the code.