help with highscore lookup

I want to make a program that searches the runescape highscores, and puts the values into labels on the form. Everything is working well, except when I search someone that doesnt appear on the highscores, the form crashes.

I am using Flaming Idiots' code found here:
http://www.sythe.org/showthread.php?t=147999


Can anyone tell me how I can fix this problem?

Thanks
Matt.

 

I've created a new code for hiscores page. I'll create a new thread for it.