[Help]Error open courier-authlib in CentOS

[hklcf]

Code:

# rpm -Uvh courier-authlib-0.57-1.i386.rpm courier-authlib-userdb-0.57-1.i386.rpm courier-authlib-devel-0.57-1.i386.rpm courier-0*.rpm courier-imapd-0*.rpm courier-pop3d-0*.rpm

when i do this..it say

Code:

error: open of courier-authlib-0.57-1.i386.rpm failed: No such file or directory
error: open of courier-authlib-userdb-0.57-1.i386.rpm failed: No such file or directory
error: open of courier-authlib-devel-0.57-1.i386.rpm failed: No such file or directory

I use ls to check..

Code:

courier-authlib-0.60.1-1.i386.rpm
courier-authlib-debuginfo-0.60.1-1.i386.rpm
courier-authlib-devel-0.60.1-1.i386.rpm
courier-authlib-ldap-0.60.1-1.i386.rpm
courier-authlib-mysql-0.60.1-1.i386.rpm
courier-authlib-pgsql-0.60.1-1.i386.rpm
courier-authlib-pipe-0.60.1-1.i386.rpm
courier-authlib-userdb-0.60.1-1.i386.rpm
courier-debuginfo-0.57.0-1.i386.rpm
courier-imapd-0.57.0-1.i386.rpm
courier-ldap-0.57.0-1.i386.rpm
courier-maildrop-0.57.0-1.i386.rpm
courier-maildrop-wrapper-0.57.0-1.i386.rpm
courier-mlm-0.57.0-1.i386.rpm
courier-mlm-web-0.57.0-1.i386.rpm
courier-mysql-0.57.0-1.i386.rpm
courier-pgsql-0.57.0-1.i386.rpm
courier-pop3d-0.57.0-1.i386.rpm
courier-webadmin-0.57.0-1.i386.rpm
courier-webmail-0.57.0-1.i386.rpm

but i change the filename to the new version, it say

Code:

error: Failed dependencies:
        libltdl.so.3 is needed by courier-authlib-0.60.1-1.i386
[root@localhost ispcp-omega-1.0.0]# rpm -Uvh courier-authlib-0.60.1-1.i386.rpm courier-authlib-userdb-0.60.1-1.i386.rpm courier-authlib-devel-0.60.1-1.i386.rpm courier-0*.rpm courier-imapd-0*.rpm courier-pop3d-0*.rpm
error: Failed dependencies:
        libltdl.so.3 is needed by courier-authlib-0.60.1-1.i386
[root@localhost ispcp-omega-1.0.0]# rpm -Uvh courier-authlib-0.60.1-1.i386.rpm
error: Failed dependencies:
        libltdl.so.3 is needed by courier-authlib-0.60.1-1.i386

Can anyone help me

[hklcf]

my ispcp version is 1.0.0 RC4, CentOS 5.1

[hklcf]

when i download the libltdl.so.3, it's work^^