In my SharePoint site I am using a custom masterpage which is based on the original v4 masterpage. I did not make any big changes, except add a line to use custom CSS.
However when I create a Search Center using the Basic search site template and then add my custom masterpage, the search box dissapears.
Below are two images to demonstrate my problem :
This image demonstrates how the site looks after I use my custom master page, in the red square you can see the line of an ill sized part of the page. As it is http://img18.imageshack.us/img18/4521/error1sj.png
This image demonstrates how the site should look, and then I mean the search box being present. As it should be http://img833.imageshack.us/img833/6398/error2sq.png
So my question is what is the cause of this problem and if I am missing a contentplaceholder, then which one is it?
edit So as PirateEric said, the Search center inherits from the minimal.master so that is causing this weird layout. I would like to make it possible to use just one master page for all sharepoint site. So my question is which contentplaceholders do i need to make this happen?
All help and comments are appreciated!