Problem when i patching Login, Identities and change password

[algodas]

I have a problem applying the patch to change the password on the basis LDAP. Can anyone help me? When I try to apply the following error appears:

patch -p0 < ldap.diff
can't find file to patch at input line 4
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
--------------------------
|diff -Nur public_html.rc1/index.php public_html/index.php
|--- public_html.rc1/index.php   2007-09-14 08:49:18.000000000 -0700
|+++ public_html/index.php   2007-09-14 08:53:15.000000000 -0700
--------------------------
File to patch: ../index.php
patching file ../index.php
patch: **** malformed patch at line 11:   +   require_once('include/cache.inc');

   
I'm using this patch:

http://www.roundcubeforum.net/plug-ins/1890-ldap-patch-login-identities-change-password.html

[]'s