Kaptinlin Themes Support

I've installed the Strinking theme and I'm exploring its options, but something strange that is happening is that when I write or edit a post and I try to include an image, the "add an image" button of the Wordpress backend editor (TinyMCE, I think) does not work properly.

Usually when you want to load an image you click on that button and a popup window appears allowing you to browse your harddisk to upload the image or images you want to include in the post. That works properly in my installation if I select the default TwentyTen theme.

But when I'm working with Striking and I click on the "Add an Image button", the post edition dissapears to load the upload image options on the new page. I can upload images, but after I insert them on the post I cannot return to the post I was editing. I attach three images to clarify this strange situation.