Stargate overloader Focus beam lua Error

Like the title says the focus beam dose not work for me it comes up as a error what do i do to fix it. The SVN checkout code is : http://sgose.googlecode.com/svn/trunk/ and i dont rember the error

How about you start gmod and give us the error so we can actually do something?

ok the Error is:Timer Error: [addons\sg overloader\lua\entities\energy_beam\init.lua:320] attempt to index field ‘Laser’ (a nil value)