Simple Invoices - Forum

I'm on the install page. When I click on Install Database button, nothing happens. This is copy of my config.ini. What should i double check to proceed with install. Please assist. Thanks!

config.ini
; Simple Invoices configuration file
; - refer http://www.simpleinvoices.org/config for all options

; Production site configuration data
[production]
database.adapter = pdo_mysql
database.utf8 = true
database.params.host = localhost
database.params.username = web4u1
database.params.password = password
database.params.dbname = web4db1
database.params.port = 3306

authentication.enabled = true
authentication.http =

export.spreadsheet = xls
export.wordprocessor = doc
export.pdf.screensize = 800
export.pdf.papersize = A4
export.pdf.leftmargin = 15
export.pdf.rightmargin = 15
export.pdf.topmargin = 15
export.pdf.bottommargin = 15

local.locale = en-gb
local.precision = 2

email.host = localhost
email.smtp_auth = false
email.username =
email.password =
email.smtpport = 25
email.secure =
email.ack = false

version.name = 2010.1 - stable

debug.level = All
debug.error_reporting = E_ERROR
phpSettings.date.timezone = UTC
phpSettings.display_startup_errors = 1
phpSettings.display_errors = 1


; Staging site configuration data inherits from production and
; overrides values as necessary
[staging : production]
database.params.dbname = simple_invoices_staging
database.params.username = devuser
database.params.password = devsecret

[dev : production]
database.params.dbname = simple_invoices_dev
debug.error_reporting = E_ALL
phpSettings.display_startup_errors = 1
phpSettings.display_errors = 1