[The-Disaster]

when i start the server and the players join i get an error and i enables the debug here it is :

Displaying debug trace (plugin "zp_antiblock.amxx")
L 11/08/2008 - 20:40:25: [AMXX] Run time error 10: native error (native "zp_get_user_zombie")
L 11/08/2008 - 20:40:25: [AMXX]    [0] zp_antiblock.sma::fwd_touch (line 40)
L 11/08/2008 - 20:40:25: [AMXX] Displaying debug trace (plugin "zombie_plague40.amxx")
L 11/08/2008 - 20:40:25: [AMXX] Run time error 4: index out of bounds 
L 11/08/2008 - 20:40:25: [AMXX]    [0] zombie_plague40.sma::native_get_user_zombie (line 6912)
L 11/08/2008 - 20:40:25: Unhandled dynamic native

can any one help me solve it
ps:it happens only when i enable the plugin antiblock