Excel error 1004 “Unable to get … property of WorksheetFunction class” appearing inconsistently

Question

I have a VBA function within a spreadsheet which operates on another spreadsheet that is opened in an earlier stage of my macro. The macro used to work fine but just recent

Answer 1

This error occurs often when any argument passed to the worksheet function is not of the correct type or simply doesn't make sense.

For example, I've had this problem when calling WorksheetFunction.Asin with an argument bigger than 1. In your case, I'd guess currentCell.Value is a non-numeric value or one not according to your region settings regarding numbers.

Yes, the error message is really misguiding.