FileCopy will not copy a file

[aaloway]

I am unsure why, but the function FileCopy will copy some files and then fail to copy this one exe file. I am unsure why as I have tried recreating the exe, I have tried different exe's and they have worked. I dont know what else would be causing this one file not to copy. The file that will not copy is not the last one and it is not the first one in the folder.

#RequireAdmin
$currentDir=@ScriptDir
$properties=$currentDir&"\Install_Files\Properties.PROPERTIES"
$path=InputBox(FileReadLine($properties,3)&" Install","Please enter the folder path to install to.",@UserProfileDir&"\"&FileReadLine($properties,3))
If (@error==1)==False Then
    $handle=FileFindFirstFile($currentDir&"\Program_Files\*")
    While 1
        $file = FileFindNextFile($handle)
        If @error Then
            ExitLoop
        EndIf

        If StringInStr(FileGetAttrib($currentDir&"\Program_Files\"&$file),"D") Then
            DirCopy($currentDir&"\Program_Files\"&$file,$path&"\"&$file,1)
        Else
            $success=FileCopy($currentDir&"\Program_Files\"&$file,$path&"\"&$file,9)
        EndIf
    WEnd
    FileCreateShortcut($path&"\"&FileReadLine($properties,1),@DesktopCommonDir&"\"&FileReadLine($properties,2),"","","",$path&"\"&FileReadLine($properties,4))
    FileCreateShortcut($path&"\"&FileReadLine($properties,1),@StartMenuDir&"\"&FileReadLine($properties,2),"","","",$path&"\"&FileReadLine($properties,4))
EndIf
MsgBox(0,FileReadLine($properties,3),"Instalation Complete")

[Palestinian]

So... whats the exe that won't get copied?

[aaloway]

It is another program that I created in c#. The other exe that did copy is also one I made in c#