Forum Error when i try to go to my old posts

[Dogbark]

Forum Error

There has been a serious error loading the forum. No further information is available.

Please contact the administrator if this message persists.

Try Again

Every time i try to go to my old posts and set it to "since : forever" the site loads for a few seconds, then i get a 404 and the Error message above.

While im on it id like to mention that showing some sort of loading symbol while XHRs are loading would make the site more fun to use.

Not hating just a suggestion.