Strange error message?

I am a Firefox user. When I tried clicking on the second link in this post, I got the following error message:

But I can’t find any way a “” URL is involved at all. It seems like a simple, straightforward link to

What seems to be the problem?


if you enter that URL itself it redirects to

which seems to point to a page that is session dependent.

You can get to it by copy+pasting this:

It doesn’t seem to like:

  1. Links
  2. the part that says ?nclick_check=1