$PSTPATH is ok, EXIST find the outlook.pst file.. the problem appears to be in the path:

$PSTPATH = $perfilusr + "\Config~1\Datosd~1\Microsoft\Outlook\"

if i reemplaze this with:

$PSTPATH = $perfilusr

And put a "outlook.pst" file in this dir, the script run OK

maybe some limitation of "getfilesize()" and the 8.3 format in directory name? :/