This is a simple temporary workaround for people having trouble with looking up old forum posts and getting Page doesn’t exist error (mainly using search engines).
Open your web browser and create a new bookmark.
Right-click on the bookmark and Edit the URL/ Location with the following line. (Optional: Change Title / Name)
contains the apostrophe character: ’ (slightly tilted), write down with a US-International keyboard, I suppose.
On an european keyboard, the apostrophe is a ' (straight sign).
I use an European coding, so If I copy and paste the string into the URL Location in Firefox, it changes the apostrophe with %E2%80%98 and the bookmarklet doesn’t work.
So, for those who use the European coding, they have to correct the apostrophe (straight sign) by hand.