Cannot login to phpBB with correct password?

Auto-Install Applications > PHPBB
Getting this error:
"You have specified an incorrect password. Please check your password and try again. If you continue to have problems please contact the Board Administrator"
 
Solution:
 
1. make sure the password is correct. Else, try to use phpmyadmin to reset it.
2. try manually deleting everything from your /cache folder EXCEPT index.htm using FTP.