I have a custom function that works correctly using aspose.cells for net 7.0.4.8. However, if I do nothing other than update to the latest version of cells (7.1.2.6) I get a stack overflow at the CalculateFormula(False, New CustomFunction) line (it doesn't even go into the function).
I'm under a deadline so for now have rolled back to the older dll and hope that you can find this issue.
Rick