Insert Facebook Application into Canvas Page & Profile Page

Suppose I have the following details from Facebook application developed, based on Widgetbox's widget: ---------------- API Key: **** Application Secret: **** Application ID: **** ----------------- , Can I then insert the Facebook application by Widgetbox into BOTH my Facebook profile page and Canvas page ? I have specified my canvas page as [login to view URL]{name of application}/ Yet, I got nothing except an error message shown when I visited that url. It is supposed to be according to the last steps shown on: [login to view URL] , since I am using WidgetPro to create the application, but funny that it doesn't get shown on my Canvas page in Facebook, nor profile page.