sorting associative array's keys by values

[maarten van damme]

For some crazy reason my program now crashes on seemingly random
locations when parsing content of the form:
	                <div class="details">
	                    <h1 class="unique">randomname</h1>
I want to extract randomname but an xml parser would be overkill so I
extract it using
curLine=curLine[curLine.countUntil(">")+1..$];
curLine=curLine[0..curLine.countUntil("</")];

with curLine containing the contents of the second line.
When it crashes, it does so on the second instruction. I tried
wrapping try{}catch around it but to no avail.
I have no problem with it crashing, could be a logic mistake, but I
really need to be able to rely on try{}catch...

It's really strange because every string involved in the process is
completely cleared and it fails sometimes on cases where it has no
problems the other times.