error 037: invalid string (possibly non-terminated string)

//RoundSound.amxx -by PaintLancer  

#include <amxmodx>  

public plugin_init()  
{  
register_plugin("RoundSound","1.0","PaintLancer")  
register_event("SendAudio", "t_win", "a", "2&%!MRAD_terwin")  
register_event("SendAudio", "ct_win", "a", "2&%!MRAD_ctwin")  
}  

public t_win()  
{  
new rand = random_num(0,4)  

client_cmd(0,"stopsound")  

switch(rand)  
{  
case 0: client_cmd(0,"spk narezky/1")  
case 1: client_cmd(0,"spk narezky/2")  
case 2: client_cmd(0,"spk narezky/3")  
case 3: client_cmd(0,"spk narezky/4")  
case 4: client_cmd(0,"spk narezky/5")  
}  

return PLUGIN_HANDLED  
}  

public ct_win()  
{  
new rand = random_num(0,4)  

client_cmd(0,"stopsound")  

switch(rand)  
{  
case 0: client_cmd(0,"spk narezky/6")  
case 1: client_cmd(0,"spk narezky/7")  
case 2: client_cmd(0,"spk narezky/8")  
case 3: client_cmd(0,"spk narezky/9")  
case 4: client_cmd(0,"spk narezky/10")  
}  

return PLUGIN_HANDLED  
}  

public plugin_precache()  
{  
precache_sound("narezky/11.wav")  
precache_sound("narezky/12.wav")  
precache_sound("narezky/13.wav")  
precache_sound("narezky/14.wav")  
precache_sound("narezky/15.wav[color=green]"[/color])  
precache_sound("narezky/16.wav")  
precache_sound("narezky/17.wav")  

return PLUGIN_CONTINUE  
}