Warning message. Roll Back WordPress to pervious version

Hi
I keep getting this message:

Warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, ‘ReduxFramework::_options_page’ was given in /home/infoboxco/public_html/wp-includes/plugin.php on line 52

I deactivated all the plugins I recently installed and changed my permalinks back to what they were. What does this message mean (I’m new to this).

Also how do I roll back my word press version as none of the plugins that I was using have been tested with the new version of WordPress and this maybe the cause of the trouble. I don’t want to lose my information on my site. This took me ages to build…

Thanks for your help.

• This topic was modified 8 years, 6 months ago by kinglizzy.