Site says I don't have permission to view

[Brian Adams_26528]

Error code: 2F173/K

I have accessed this topic thousands of times and I can access all other topics but today I'm told I don't have permission to view this topic.

permission.psp

[Mark H]

That attachment won't open (with any app I have, at least) so I cannot tell what is the issue.

Is this a topic on your site, or a topic on ours?