Problem starting FPS starter kit, HELP

When i hit F11 to start new mission or whatever, a boxs pops up
that says on the top 'dissconnect'

then the box says,

you do not have the correct version of the FPS starter kit
or related art needed to play on this server, please contact
the server operator for more information. (WHAT SERVER OPERATOR??)
'(missing particle texture:starter.fps/data/shapes/particls/smoke)

^^^i have that texture also in my data files but have no idea why it says this.
can anybody please help me???
Thanks,