The simpler media website CMS
Using Zenphoto 1.5.9.
search.php page gives results - it's OK, but ...
Clicking on an image thumb, the image page is opened with the image.php file, even if your album uses another image-something.php file.
Example : using "image-s.php" on the image, clicking on the image thumb, image page uses the image-s.php theme.
It's Ok - as expected.
But cliking the result image thumb from the search page uses the image.php file, not the image-s.php file.
Because I'm using my own theme, I did replace "search.php" file with your original 1.5.9 "search.php" file : same problem.
What is strange : the link is ok : if I open it separately, I get the right display.
The same link does not use my image-s.php file if used from search.php page.