Exception EreadError in dll

I sent an updated file to one of my end user. At launch he had this error “Exception EReadError dans le module myapplication.dll en 00094BDD”.
First of all it is strange that the message is in French, while I’m from Italy.
Anyway any suggestion about it?
End user has a 32bit version of Office Home and Business 2016, while the file has been generated by a Office 2010.

Thank you

Are you using the latest version of XLS Padlock?