Existing users, 
According to a post on Mac Fixit there is a fix to work around the problem with the instant crash feature that Version 10 has been blessed with.
http://www.macfixit.com/article.php?story=2005091508055730
1) Go to System Preferences -> Network
2) On the TCP/IP panel (for built in ethernet) click on the IPv6 options and set to automatic
3) Run Stuffit and turn off version checking
4) Turn IPv6 back to "off" [optional]
Aparantly this is a know "issue" that Allume are allegedly "dealing with."
StuffIt Expander
expands downloaded file archives
Version: 13.0.2
Instant Crash Fix
Feedback Type: Troubleshooting Report
Contributed by: etherite Friday, September 23 2005 @ 03:52 AM PDT
Product Platform: MacOSX
Used Product For: Over One Year
System Info:
Comments
Instant Crash Fix - Quadroclops
silly who? -how can I switch off options when it crashes before I can access them?!?!?Sunday, September 25 2005 @ 11:13 AM PDT
Instant Crash Fix - kwsanders
Fantastic tip! This definitely allows me to use Stuffit Expander 10 now on Tiger 10.4.2.Thanks for posting this.
Saturday, October 29 2005 @ 09:59 PM PDT
Instant Crash Fix - etherite
Oops - I forgot to mention that you need to turn off version checking in *all* of the stuffit programs - ie expander, dropstuff etc etc.Silly me ;o)
Reply to This
Friday, September 23 2005 @ 03:54 AM PDT