All it's my fault!
-_-'
I'm trying to rename this path:
C:\_MyFile.xlsx
To:
C:\MyFile.xlsx
In my computer all works fine because I have the both files (The users only has the file with the underscore).
When the program try to validate it try to rename the file "_C:\MyFile.xlsx"
to "C:\MyFile.xlsx"
The exception don't give much information about my error...