perms trouble Animation|Take Control

have no idea what is with it, i have a custam animation that will triger when you sit in the car then at another part after you say start it will do the llTakeControl perms but the trouble is right after the perms event

changed(integer change)
    {
        if (change & CHANGED_LINK)
        {
            key agent = llAvatarOnSitTarget();
            if (agent)
            {
                    
                    llMessageLinked(LINK_ALL_CHILDREN , 0, "WHEEL_DRIVING", NULL_KEY);
                    llSleep(.4);
                    llSetStatus(STATUS_PHYSICS, TRUE);
                    llSleep(.1);
                    llRequestPermissions(agent, PERMISSION_TRIGGER_ANIMATION);
                    llSetTimerEvent(0.1);
                    llSleep(0.7);
                    driver = llListen(0,"",agent,""); 
                    Linear = <0,0,-2>;
            }
            else
            {
                llSetTimerEvent(0);
                llStopAnimation(DrivingAnim);
                Active = 0;
                llStopSound();
                llSetStatus(STATUS_PHYSICS, FALSE);
                llMessageLinked(LINK_ALL_CHILDREN , 0, "WHEEL_DEFAULT", NULL_KEY);
                llReleaseControls();
            }
        }
    }

    run_time_permissions(integer perms)
    {
         if(perms == (PERMISSION_TRIGGER_ANIMATION | PERMISSION_TAKE_CONTROLS)
         
            //ERROR
            llStopAnimation("sit"); 
            llStartAnimation(DrivingAnim);
            llTakeControls(CONTROL_FWD | CONTROL_BACK | CONTROL_DOWN | CONTROL_UP | CONTROL_RIGHT | CONTROL_LEFT | CONTROL_ROT_RIGHT | CONTROL_ROT_LEFT, TRUE, FALSE);
        }
    }
    listen( integer channel, string name, key id, string message )
    {
        key agent = llAvatarOnSitTarget(); 
        if(message == "start")
        {
            llRequestPermissions(agent,PERMISSION_TAKE_CONTROLS);
            llTriggerSound("car_start",1);
            llSleep(3.0);
            llLoopSound("car_idle",3);
            llSetStatus(STATUS_PHYSICS,TRUE);
        }
        else if(message == "stop")
        {
            llStopSound();
            llSetStatus(STATUS_PHYSICS,FALSE);
        }
    }

I dunno if this is 'it', but you may need to grant both permissions at once--when PERMISSION_TAKE_CONTROLS gets granted it'll replace PERMISSION_TRIGGER_ANIMATION... the client says "change the permissions mask to *this*" instead of "add this permission to the permissions mask"

Definately request animation and controls permissions at the same time, do not do them in series or as Day Oh has pointed out, you lose the animation permissions.

Also, do not use == when evaluating the permissions parameter. Use the & operator.

In the changed event you want:
llRequestPermissions(agent, PERMISSION_TAKE_CONTROLS | PERMISSION_TRIGGER_ANIMATION)

In the run time permissions event, I do something like this:
if(perms & PERMISSION_TRIGGER_ANIMATION) llStartAnimation("animation name";
if(perms & PERMISSION_TAKE_CONTROLS) llTakeControls(controls_bitmask, TRUE, FALSE);

It might be a bit clunky but it works and doesn't throw errors.
As soon as the avatar is seated, they do the animation and the vehicle takes controls, you can then use their 'start' chat to activate the physics etc.

-Atashi