Installation went smoothly thru step one.
When the step two page came up it displayed the following errors.
bbPress database error: [Incorrect table definition; There can only be one auto column and it must be defined as a key]
ALTER TABLE bb_users ADD COLUMN ID bigint(20) unsigned NOT NULL auto_increment
bbPress database error: [Key column 'ID' doesn't exist in table]
ALTER TABLE bb_users ADD PRIMARY KEY (ID)
1. Added index bb_users PRIMARY KEY (ID)
bbPress database error: [Unknown column 'ID' in 'where clause']
SELECT * FROM bb_users WHERE ID = 1
bbPress database error: [Unknown column 'ID' in 'where clause']
SELECT * FROM bb_users WHERE ID = 0
I checked via MyphpAdmin and have been unable to determine how to correct the errors, or even understand what they are.
Below the error list it appears as though step two partially worked, i.e. it displays a login link and user name and P-word.
However the login link returns (paraphrased) "it appears you have not installed bbpress" and a link to the install page.
The database used was one from a bbpress install of over one year ago.
I also made a second, but new, database with the same results as described above.