I got my wordpress working again by making the following change.
I changed this: a:1:{s:9:”keymaster”;b:1;}
to this: a:1:{s:13:”administrator”;b:1;}
Now I think I’ve got to figure out how to undo the bbpress installation and do it again properly. I too suppose I didn’t read the instructions carefully enough.
In my case, I want to integrate wordpress and bbpress. So I thought I was supposed to have the tables names be the same.