Hello Hax,
My server is running on PHP 5.2 and they are currently upgrading it to 5.3.
I do not know how to activate wp_debug – I am not advanced enough to mess with the front end of my website and deal with possible consequences of messing something up in the code.
I am using a bunch of other plugins but it all worked perfectly well until my website got transferred to the newer server.
The other plugins that I am using:
Captcha
Akismet
EmbedIt
Fancy Gallery (radykal)
Font
Google Analytics for WordPress
Jetpack by WordPress.com
NextGEN Gallery
Page Links To
Readers From RSS 2 BLOG
Slideshow Gallery
TablePress
TinyMCE Advanced
Ultra Hide Comment Box
WordPress Facebook Like Plugin
WP e-Commerce
Zopim Widget
I hope it helps. Thank you so much for your help!