So now we've narrowed down where the error is because this works, but this doesn't for ハイドン, but for jaclaz this works, and this does work, too!!!
But notice that the latter form of the link is the way the forum builds the link by default, before the links are converted to those crawler-friendly
nonsense err... links, I mean.
More than "narrowed" we have found how the general rule applies.
The good guys at IPB have evidently decided - changing them at every other release and thus messing up half existing boards of the net, to add a kind of "overlay" of "friendly" syntax to the board software "native" one.
So that, just like happened for threads friendly names, more than once, there is a on-the-fly translation, which - besides most probably adding senselessly load to the server - often fails.
As soon as you find a way to provide a "more direct" link (i.e. bypassing the - often, as in this case, botched - "translation overlay") you get where you wanted to go.
The accident that happened to them, unfortunately, is of a kind that it is improbable that it's consequences can be cured, more details on the (loosely) related "botched reboot.pro CODE converter page":
A (nice) experiment is the following:
If you want a link to this thread, you would have:
but (say) this will resolve as well):
and also this:
but not this:
Of course the "right" way is:
that will always "get you" here.
Edited by jaclaz, 20 August 2013 - 08:45 AM.