Build Dispenser Crashing Server [with logs of error]
 

My Server laggs horrible in between i mean to say that pings go from 30 to 200 and all gets lagged
and when i change map everything back to normal same number of players still.
and 1 more bug i noticed is that the dispenser sometimes goes inside the floor making me horribly amazed because it goes slowly slowly infront of us after building inside the floor :D
makes feel lolness
but it is a problem because the played who made cannot make new until previous one is destroyed :|
and cant locate it making impossible to take hp and armor

Here is the logs:
L 04/18/2012 - 18:49:59: [CSTRIKE] Invalid player 2
L 04/18/2012 - 18:49:59: [AMXX] Displaying debug trace (plugin "BuildDispenser.amxx")
L 04/18/2012 - 18:49:59: [AMXX] Run time error 10: native error (native "cs_get_user_team")
L 04/18/2012 - 18:49:59: [AMXX] [0] BuildDispenser.sma::DispenserThink (line 260)

Scripting file in attachment..
Any Soltions for it please let me know

Thanks & Best Regards
Shubham Gulati