a clean installation      (win2k3, sql  2005, dotnet 3.5 sp1)
  donetnuke 5.6
  the event is 5.1.5

make a page , and install  the module into the new page,
it shows a crash page once  the "add event "  is clicked

DotNetNuke.Services.Exceptions.ModuleLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object. at DotNetNuke.Modules.Events.EditEvents.Page_Load(Object sender, EventArgs e) --- End of inner exception stack trace ---

 I am new to the dotnetnuke, try to make a site  with the event module , but can not get it 

Is there any body  who can help me out ?

thanks.

ok, finally I got one working.

before, I downloaded the module from www.dotnetnuke.com  and install the module by  Host->extensions->install extension wizard....

Now , I do this way ,     make another clean install of dotnetnuke,  and install the event  by  Host->extensions-> install available extension.

thank you for your reply.