Outlook Add-in Deployment

I have create an outlook add-in. When i run it in my machine ,it works fine. Then i publish it. I click the .vsto file in client machine to deploy add,it runs well and  there is no warning,when i open the outlook,i can see the add_in.however when i click the button(get info).there is no feedback,so I  add the code messagebox.show("failure") in the button_click event in the first line, it shows nothing too.

note: i am using VS2010. .NET framework 4

please;