[dr.pepper]

I'm guessing you don't have 'return 0;' at the end of the OnPlayerCommandText code. Must be the very last line of the commands.

pawn Код:

public OnPlayerCommandText(playerid, cmdtext[])
{
    if(!strcmp(cmdtext, "/mycommand", true))
    {
        //code
        return 1;
    }
    return 0; // this is what your missing?
}