I am having a problem using metsaploit. I get this error when i start metasploit "Error getting session listmsfgui.MsfException: error in call: null" Can someone please help me? My OS is windows 7 and I am using a postgres database. I also have the latest version of metasploit. 4.4.0

i have tryed to go to #metasploit on irc.freenode.net but no one there could help me.