Problem Update Full Frame pro Version : 3.9.4

Hello, when i update to this version i have this message : f Warning: Cannot modify header information - headers already sent by (output started at /homepages/33/d596965880/htdocs/clickandbuilds/PhotographeMougins/wp-content/themes/full-frame-pro/inc/fullframe-core.php:1) in /homepages/33/d596965880/htdocs/clickandbuilds/PhotographeMougins/wp-admin/includes/misc.php on line 1126 Can you help me please, i reinstall 3.9.3 (i have the last version of Wordpress for information) Thanks a lot Christian