Limit on number of messages in an OSC bundle?

In my tests using mchelper 2.2 and heavy 1.3.1 I have found that there is a limit of 5 messages that can be sent in each OSC bundle from Flash. Why does this limit exist?

Well, let's say I adapted the DigitalOut.fla AS2 code example as per below:

TEST 1 (sets first 4 digital outs, works OK):

import com.makingthings.makecontroller.*;
var mcflash:McFlashConnect = new McFlashConnect();
var OscBundle = [];
onLoad = function () {
    mcflash.connect();
};
mcflash.onConnectError = function() {
    trace("Connection to Mchelper did not succeed.");
    trace("** Make sure it's running, and that nothing else is listening on port " +

mcflash.mchelperPort);
};
mcflash.onBoardArrived = function(board:Board) {
    mcflash.setDefaultBoard(board);
};
function setDigitalOuts() {
    for (i = 0; i < 4; i++) {
        var currentState:Number = 1;
        OscBundle.push(new OscMessage("/digitalout/" + i + "/value", [currentState]));
    }
    clearInterval(wait);
    mcflash.sendBundle( OscBundle );
}
wait = setInterval(setDigitalOuts, 2000);

TEST 2 (if you reset the dig outs to 0, and try to set 5, works OK):

function setDigitalOuts() {
    for (i = 0; i < 5; i++) {
        var currentState:Number = 1;
        OscBundle.push(new OscMessage("/digitalout/" + i + "/value", [currentState]));
    }
    clearInterval(wait);
    mcflash.sendBundle( OscBundle );
}

TEST 3 (if you reset the dig outs to 0, and try to set 6 or more, it doesn't work, mchelper logs the send requests as per normal, but the board doesn't respond):

function setDigitalOuts() {
    for (i = 0; i < 6; i++) {
        var currentState:Number = 1;
        OscBundle.push(new OscMessage("/digitalout/" + i + "/value", [currentState]));
    }
    clearInterval(wait);
    mcflash.sendBundle( OscBundle );
}

Yes I'm sending the same value just for testing. The real app needs varying values sent. Like 01001000 and then a minute later 10000100 for instance.

Could any of the jumper configurations on the board be causing this behaviour?

Thanks Liam, I've added that issue for further investigation.

I also had this problem and followed up Nick's ticket. It turns out that you can easily fix this problem by editing the file osc.c and changing the value of #OSC_MAX_MESSAGE_IN

Then just open the Heavy Example in mcbuilder, rebuild it and upload.

I changed the value from 200 to 400 and this did the trick for me.

Cheers.