Cannot open Marketo Custom Object webpage

[Anonymous]

When I click the Admin->Database Management->Marketo Custom Object link, I got the following error page popped out:

Does anyone know what problem would it be, I am new to marketo and I am going to do some marketo integration development with custom objects.

Thanks!

[Kenny_Elkington]

Do you have the menu in your admin section?  If you have spark edition, then custom objects will not be available.

[Anonymous]

Thank you. I have the menu as below, how to check it is spark edition, all of my other colleagues can access it, I wonder if there is any permission setting somewhere.

[Kenny_Elkington]

It looks like you're already in the menu.  Are you getting this error when you click on the menu?  When's this error occurring?

[Anonymous]

I got the error two weeks ago, but today I found I can create custom objects, don't know why.