application validation is not succeed unable to continue through click once

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C#

WPF

installer

ClickOnce

, +

hi
from morning onwords iam slapping my head to my laptop for this issue

i am using the 4.0 wpf framwork and i and i am trying to create the setup using the clickonce every thing is getting,

it was publishing with out any warning
it was publishing in the page and i am able to download that setup.
while installing that
iam getting the error like

application validation is not succeed unable to continue

i typing the options as like this
publish
ftp://zestwingsdemo.com/chatting1/[^]
installation url
http://zestwingsdemo.com/chatting1/[^]


apllication online or offline
in options
in Manifest tab
Checked points are -
create desktop shortcut
use the application manifest for the trusted information
Allow url parameters to be passed to applications
in Deployment tab
checked points are
verify the files uploaded to webserver
use ".deploy" file extentions
open deployement webpage after publish


in this process iam going ,



please help me out from here