Nmap does not work

[hep <hep3005 () gmail com>]

Hi

I compiled & installed the latest version of nmap 5.50 today on Ubuntu
11.04. when I tried to run it with the below commands I got the below error

Openssl is already installed on my pc & is on the path - openssl:
/usr/bin/openssl /usr/share/man/man1/openssl.1ssl.gz

The error details are given below

Please kindly advice how to rectify this matter

Thank You .
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

sudo nmap -sS -D 209.85.175.106 --script all --spoof-mac Apple www.cnn.com

Starting Nmap 5.50 ( http://nmap.org ) at 2011-01-30 13:40 IST
Spoofing MAC address 00:03:93:14:58:99 (Apple Computer)
NSE: failed to initialize the script engine:
/usr/local/share/nmap/nse_main.lua:378:
/usr/local/share/nmap/nselib/wsdd.lua:37: module 'openssl' not found:
no field package.preload['openssl']
no file '/usr/local/share/nmap/nselib/openssl.lua'
no file './openssl.lua'
no file '/usr/local/share/lua/5.1/openssl.lua'
no file '/usr/local/share/lua/5.1/openssl/init.lua'
no file '/usr/local/lib/lua/5.1/openssl.lua'
no file '/usr/local/lib/lua/5.1/openssl/init.lua'
no file './openssl.so'
no file '/usr/local/lib/lua/5.1/openssl.so'
no file '/usr/local/lib/lua/5.1/loadall.so'
stack traceback:
[C]: in function 'assert'
/usr/local/share/nmap/nse_main.lua:378: in function 'new'
/usr/local/share/nmap/nse_main.lua:542: in function 'Entry'
/usr/local/share/nmap/scripts/script.db:13: in function 'db_closure'
/usr/local/share/nmap/nse_main.lua:562: in function 'get_chosen_scripts'
/usr/local/share/nmap/nse_main.lua:990: in main chunk
[C]: ?

QUITTING!
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