No me Instala el Dropbox

Mi Windows 7 dio Error. por lo que tuve que hacer una reinstalción del SO.

Borre la Carpeta de Dropbox entre otros archivos.

Ahora cuando intento instalar el Dropbox me da errores como que no se conecta a internet etc. y me sale este mensaje.

bn.BUILD_KEY: Dropbox
bn.VERSION: 3.20.1
bn.DROPBOXEXT_VERSION: 34
bn.is_frozen: True
pid: 3628
cwd: u'C:\\Program Files\\Dropbox\\Client'
real_path=u'C:\\Program Files\\Dropbox\\Client'
mode=040777 uid=0 gid=0
parent mode=040777 uid=0 gid=0
HOME: None
appdata: u'C:\\Users\\computacion\\AppData\\Roaming\\Dropbox\\instance1'
real_path=u'C:\\Users\\computacion\\AppData\\Roaming\\Dropbox\\instance1'
mode=040777 uid=0 gid=0
parent mode=040777 uid=0 gid=0
dropbox_path: u'C:\\Users\\computacion\\Dropbox'
real_path=u'C:\\Users\\computacion\\Dropbox'
not found
parent mode=040777 uid=0 gid=0
sys_executable: 'C:\\Program Files\\Dropbox\\Client\\Dropbox.exe'
real_path='C:\\Program Files\\Dropbox\\Client\\Dropbox.exe'
mode=0100777 uid=0 gid=0
parent mode=040777 uid=0 gid=0
trace.__file__: 'C:\\Program Files\\Dropbox\\Client\\Dropbox.exe\\dropbox\\client\\ui\\common\\boot_error.pyo'
real_path='C:\\Program Files\\Dropbox\\Client\\Dropbox.exe\\dropbox\\client\\ui\\common\\boot_error.pyo'
not found
parent not found
TMP: C:\Users\COMPUT~1\AppData\Local\Temp
TEMP: C:\Users\COMPUT~1\AppData\Local\Temp
tempdir: u'c:\\users\\comput~1\\appdata\\local\\temp'
real_path=u'c:\\users\\comput~1\\appdata\\local\\temp'
mode=040777 uid=0 gid=0
parent mode=040777 uid=0 gid=0
Traceback (most recent call last):
File "dropbox\client\main.pyo", line 5220, in main_startup
File "dropbox\client\main.pyo", line 2142, in run
File "dropbox\client\configuration\manager.pyo", line 183, in load_config
File "dropbox\client\databases.pyo", line 217, in load_dropbox_config
File "contextlib.pyo", line 24, in __exit__
File "dropbox\client\databases.pyo", line 153, in new_config_file
WindowsError: [Error 5] Acceso denegado

01b80e02e8518fd23788ce1a245989ed