Fixed in 442
BYOND Version:440
Operating System:Windows Vista Home Basic
Web Browser:Firefox 3.0.10
Status: Resolved (442)

This issue has been resolved.
Descriptive Problem Summary:

Numbered Steps to Reproduce Problem:
Join any game, in the input bar type "!something" without quotes and press ENTER, now DS crashes.

Expected Results:
Throw error or something

Actual Results:
Dream Seeker crashes

Does the problem occur:
Every time? Or how often? Everytime
In other games? Yes
In other user accounts? Yes
On other computers? Not sure

When does the problem NOT occur?
When I don't type this message

Not to type message
Oh, nice find.

I've confirmed this.