I worked before with Metasploit doing other attacks and everything was fine. No problems at all. Metasploit on my machine is located at
/opt/metasploit/msf3 ,that is, the one that Backtrack had when i installed it.
My set_config file is pointed to the right Metasploit directory (to the one above).
Regarding the other modules, when i try to do the Java Applet Attack Method -Site Clone, and get to the point where it should encode the payload, i select shigata_ga_nai encoding in order to bypass the AV, then it throws some errors :
/usr/lib/ruby/1.8/rubygems.rb:1051: undefined method `gem' for module `Kernel' (NameError)
from /opt/metasploit/msf3/lib/fastlib.rb:369:in `fastlib_original_require'
from /opt/metasploit/msf3/lib/fastlib.rb:369:in `require'
from /opt/metasploit/msf3/lib/packetfu/packetfu.rb:12
from /opt/metasploit/msf3/lib/fastlib.rb:369:in `fastlib_original_require'
from /opt/metasploit/msf3/lib/fastlib.rb:369:in `require'
from /opt/metasploit/msf3/lib/packetfu.rb:4
from /opt/metasploit/msf3/lib/fastlib.rb:369:in `fastlib_original_require'
from /opt/metasploit/msf3/lib/fastlib.rb:369:in `require'
from /opt/metasploit/msf3/lib/msf/core/db.rb:28
from /opt/metasploit/msf3/lib/fastlib.rb:369:in `fastlib_original_require'
from /opt/metasploit/msf3/lib/fastlib.rb:369:in `require'
from /opt/metasploit/msf3/lib/msf/core/db_manager.rb:5
from /opt/metasploit/msf3/lib/fastlib.rb:369:in `fastlib_original_require'
from /opt/metasploit/msf3/lib/fastlib.rb:369:in `require'
from /opt/metasploit/msf3/lib/msf/core/framework.rb:69
from /opt/metasploit/msf3/lib/fastlib.rb:369:in `fastlib_original_require'
from /opt/metasploit/msf3/lib/fastlib.rb:369:in `require'
from /opt/metasploit/msf3/lib/msf/core.rb:34
from /opt/metasploit/msf3/lib/fastlib.rb:369:in `fastlib_original_require'
from /opt/metasploit/msf3/lib/fastlib.rb:369:in `require'
from /opt/metasploit/msf3/lib/msf/ui/console/driver.rb:2
from /opt/metasploit/msf3/lib/fastlib.rb:369:in `fastlib_original_require'
from /opt/metasploit/msf3/lib/fastlib.rb:369:in `require'
from /opt/metasploit/msf3/lib/msf/ui/console.rb:11
from /opt/metasploit/msf3/lib/fastlib.rb:369:in `fastlib_original_require'
from /opt/metasploit/msf3/lib/fastlib.rb:369:in `require'
from /opt/metasploit/msf3/lib/msf/ui.rb:11
from /opt/metasploit/msf3/lib/fastlib.rb:369:in `fastlib_original_require'
from /opt/metasploit/msf3/lib/fastlib.rb:369:in `require'
from /opt/metasploit/msf3/msfvenom:257
I haven't tried all the modules of set.