Error test config

[round_gio]

good morning
 I'm new
 I installed roundcube vers. 0.6 and I have this problem in 'final phase of installation:
 Check config files
  main.inc.php: NOT OK (Unable to read file. Did you create the config files?)
 db.inc.php: NOT OK (Unable to read file. Did you create the config files?)

 but I've copied the config files in the directive as shown
 can you help me
 thanks

[JohnDoh]

check the permissions on the files, i guess the webserver user cant access them.