No one else appears to have reported this yet, so clearly it's not a common problem, but as soon as I installed Custom Search on a site I'm currently working on, the search box disappeared. The search button below it stays, but the actual box you enter the text into is gone. I checked the code of the page and it's not just hidden, it's actually not there in the code at all.

The site does use a slightly customized template for the search block (search-block-form.tpl.php), but the only change I made to it was the addition of an "advanced search" link at the bottom - other than that it's just the default template. And when I tried removing the template (and clearing the theme registry), it didn't help - the only thing that did was remove the link I'd added.

There are no other modules on the site modifying search in any way - Search Config was installed at one point, but was already disabled before I installed Custom Search. And there are no functions affecting it in the theme (which is based on Omega). I'm not sure what else to check - I experimented a fair bit with the Custom Search settings, but nothing would cause the text box to reappear.

Another, possibly related issue: I can't seem to modify the advanced search form in any way. I added two taxonomy selectors, but they only appeared in the basic search form (where I did NOT want them), not in the advanced search form.

Does anyone have any idea what could be causing this?