When I try to activate the zpSkeleton theme I get the following error:

Warning: Cannot modify header information - headers already sent by (output started at /customers/a/e/f/biopixel.se/httpd.www/themes/zpskeleton/themeoptions.php:1) in /customers/a/e/f/biopixel.se/httpd.www/zp-core/admin-themes.php on line 42

zpskeleton Version 1.4.5, 7/7/13
Zenphoto version 1.4.5.1

Given the line number of the error I would guess there is a blank line in front of the `

I have corrected this in the download. Thanks!