Can't create plpython language

Hi,

I am running PostgreSQL 9.2.4.1 (from EnterpriseDB) on CENTOS 5.9 X64 server, I got the following errors when trying to create the python language handler, can you help with this, thanks in advance.

[postgres(at)lix ~]$ psql
Password:
psql.bin (9.2.4)
Type "help" for help.

No entry for terminal type "vt100";
using dumb terminal settings.
postgres=# create language plpython2u;
ERROR: could not access file "$libdir/plpython2": No such file or directory
postgres=# create language plpython3u;
The connection to the server was lost. Attempting reset: Failed.
!>

[postgres(at)lix ~]$ python
Python 2.4.3 (#1, Jan 9 2013, 06:47:03)
[GCC 4.1.2 20080704 (Red Hat 4.1.2-54)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>>

Xiaobo Gu