Error copying files

[RXQ]

each time i try to install i get a different error of coiypiying files and even i i try to restart on redo it it show me another file error : 

 Im french so 

   Erreur pendant copie du fichier de archive
   D:/Setups/Archicad-27-FRA-3001-1 .O (l).exe à D:/Program
   Files/Graphisoft/Archicad
   27/Extensions/EnergyEvaluationNlP2D.dll

---

Operating system used: Windows

[Istvan Lengyel]

I think maybe these can cause the error:

1. The downloaded installer file is corrupt -> Please try to download again

2. Sometimes some antivirus program locks some of our files