[Seaside] Installing Seaside in Squeak 3.8

[Dmitry Dorofeev]

Rick Zaccone wrote:

> 
> It wasn't sufficient to just remove the Seaside file or even the
> entire sm subdirectory.  In the end, I removed the sm subdirectory and
> restarted Squeak in order to get in working.
> 
> All of these false warning messages and difficulty recovering from a
> bad download are not very inviting to a new user.

Yes I agree. Sometimes i see such errors. Learned from a debugger that
it is just '404 Not found...' or other HTTP errors sitting in the stream instead
of zip data. a simple checking for a ZIP header and nice error message will save
new people from asking this again and again.

Thanks,
-Dmitry.