undefined

[usainBolt]

Anybody ever run into this problem?. I have an xml file loading into a dynamic text field in flash8. Everything works fine, except that the client says that sometimes the text field says undefined on one of his computers. I have looked at it in several browsers and it works fine for me. Could it be a browser issue. I have checked my actionscript and I think my code is correct.
This is my code:

var myLV:LoadVars = new LoadVars();
myLV.load("descWelcome.txt");
myLV.onLoad = function(success) {
if (success) {
desc.htmlText = myLV.desc;
}
};

This is my txt file It is named "descWelcome.txt":

&desc=<b>Greetings!</b><br><br>Welcome to CoolDogs.com, my official website and home of Plan B, C, and D.<br><br>CoolDogs.com is your personal connection to developing healthier relationships, community awareness and professional networks.<br><br>Visit often to get updated information concerning The Bridge Events, product offers, and to share in discussions on hot dating topics.<br><br>Thanks again for visiting! I look forward to seeing you at my next event!<br><br><b>Phillip Marlowe</b>

usainBolt