Hello,
I had the same problem (installed, started web client, when trying to login as "admin/admin" got a "Unable to login").
Looks like my db was incorrectly setup for stupid path reasons.
Did a 'db_remove', corrected path (make sure mysql.exe is accessible :wink: ), did a 'db_setup' again and it works.
I also use a different location filestore, but db_remove seems to always try to remove '\alf_data' so I removed my custom location by hand.
hth,
Olivier