Yes. I have the exact same issue - on a high level page I can search. On the page for PBP Pro I cannot.

On THESE pagesexample - there are others)
http://www.picbasic.co.uk/forum/forumdisplay.php?f=4
http://www.picbasic.co.uk/forum/forumdisplay.php?f=3

I get no pop-up search boxes on 'Search' or 'Quick links' or 'Forum Tools' or 'search this forum'..

However, on THESE pages : (Example)
http://www.picbasic.co.uk/forum/forumdisplay.php?f=13
http://www.picbasic.co.uk/forum/index.php?
http://www.picbasic.co.uk/forum/forumdisplay.php?f=11

- The pop-ups work fine..

I think the web site has some bad code somewhere.

Tom