S1 has uploaded a patch.
Description:
- Added workaround for 'XLCell.Value' crash, when Value would be a 'Percentage', e.g. "0.00%" but treated as 'Number' and cannot be parsed to double.
The real fix would be to handle a 'XLCellValues.Percentage' instead.
- Fixed bug in Expression.cs where trying to evaluate a formula pointing to a cell without value would crash