Alex,

> (b) I wrongly assumed that VNC 4 used a protocol 
> version greater than 3.8 which your mail indicates it does 
> not.

VNC Free Edition 4.1.2 supports protocol version 3.8.  I'm afraid I don't
remember offhand which version we used in version 4.0b4, that being a
somewhat aged release now, but it would have been 3.7 or 3.8 and you seemed
to imply that it was choosing 3.8.

> (c)  I presumed that the goal of writing about the error 
> messages was not to write literally what the error message 
> already says, but to explain to the user why the software is 
> really giving that error message and help them solve it.

Misleading people by saying that those error messages mean that Apple Remote
Desktop needs restarting doesn't seem very helpful.  The problem is that ARD
was configured to use a (non-existent) security type that the viewer didn't
understand.  It's reasonable to point out that if someone sees this when
using ARD, they should check their configuration and correct and restart ARD
to get things working, but that's only the case in this particular instance,
while the messages are general-purpose I-can't-authenticate-to-this-server
messages.
 
> When the practical reality is 
> that Apple's poor implementation can be easily (and at zero 
> dollar cost) be made to work,

Again, this is misleading.  It _may_ work.  This assumes that the user
doesn't do anything to tickle ARD into sending non-RFB-compatible data to
the client, which given the way in which it mis-handles the basic protocol
version negotiation stage seems quite possible.

> I consider it useful to 
> document that these messages really indicate a different 
> underlying cause than a plain software bug (namely that the 
> software is misconfigured at the moment and needs to be 
> restarted).

The messages you originally quoted indicate that there are two bugs as well
as a configuration issue, in fact.

Regards,

Wez @ RealVNC Ltd.
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