Crash with asx files

Question

Download http://personales.ya.com/rolf/mscrash.zip, unzip, and open dir/all-error-handling.html

Result:
Crashes both in FF and IE.

The crash doesn't always happen in the same place, so it's hard to narrow it down further.

It's also possible to try out http://personales.ya.com/rolf/mscrash/dir/all-error-handling.html, but this only crashes IE (and not that often as the zip file), FF seems to have a problem loading that page correctly.