Next Gen Gallery Error

Hello, my name is Ellis and I’m currently going through an error in my wordpress developed site http://www.enlacosa.com. I have the gallery plugin called NextGen Gallery to upload photos to my site but just so happens that last night I uploaded my pictures through the plugin but when I want to insert the gallery id on a post, this message appears as soon as I publish the post:

Fatal error: ob_start() [ref.outcontrol]: Cannot use output buffering in output buffering display handlers in /home/enlacosa/public_html/wp-content/plugins/nextgen-gallery/lib/core.php on line 293

When I try opening the post the same message appears. On top of all that even when I try viewing the Photo Gallery category the same message appeared. Do you guys think it might be the plugin that might have a bug or needs reinstallment? I’d appreciate any possible help I can get.

Thanks in advance!