Copying files from a network path

I am trying to copy files from a network path during installation, however; the files are not copied.

!define FileCopy `!insertmacro FileCopy`

      !macro FileCopy FilePath TargetDir

          CreateDirectory '${TargetDir}'

          CopyFiles '${FilePath}' '${TargetDir}'

      !macroend

Section "!Application" SecApplication

      SectionIn RO



      ${FileCopy} '\\networkpath\path\file.txt' '$INSTDIR'



SectionEnd

Is there something I'm missing?

There maybe several reasons:

1) Maybe not every user has the same mapping for \\networkpath\ - file cannot be found
2) Is target dir. accessible (UAC problems) ?
3) Was target dir. created? Check error flag

And do not use the same name 'FileCopy' for symbol and macro name.