App stops working when given too much xml

Question

I have an AS3 application I built for a client about a year
ago. The application loads a dynamic page of xml data and then
builds the screen using that data. He has used the application
happily for a year and recently complained that it stopped working
and asked me to debug. It turns out the number of items in my
client's database have exceeded 1200 items and at ROUGHLY that
magic number the screen fails to build (I determined this through
trial and error by trimming down the data page). There is nothing
in my code that alludes to any limit. I don't believe this is a
problem of the xml data CFM taking too long to pull from the
database (for debug purposes I have hardcoded that data page to
eliminate a slow database issue). My IOErrorEvent.IO_ERROR function
is never called, so the app seems to be under the impression it is
reading the XML completely. The BuildScreen() function simply loops
through the .length of the xml, so there are no limits there I have
purposely imposed. The application definitely stops at this magic
number of 1200 (give or take 5-10 items). There are no errors in
the xml data itself. At this magic number of 1200 if I refresh the
page over and over it works sometimes and fails others. If I add 20
more items to the list it never loads. If I delete 20 items it
always works. I'm going to put the code in its entirety below. I
would SO MUCH appreciate if someone can help me understand what is
going on. Thankyou.

Answer 1

I quickly threw this code together to try to describe
by problem. I didn't think it was prudent to post all
the code in my web app. (servlet happens to be the
context path, and I just threw the tag in to duplicate
the problem I'm having).Prudence is your call, but nobody will be able to help unless they can see what the problem is.
It's a difficult call, because posting too much will scare people off, too. (I know I don't want to read your entire app.)
The log doesn't really help.Neither does this post.
Needless to say, you've got a deployment problem. Tomcat 5.0 works; so does the JSTL 1.1 tag library. You're doing something wrong.
If you've never used JSTL before, I'd recommend that you read something serious, like Hans Bergsten's O'Reilly book on JSPs. He writes it entirely in terms of JSTL, because that's what people should use from now on. I think his 3rd edition even has the JSTL 1.1 tag library.