Please ask SocialNetworking.Solutions to have a look. This could be from an old plugin conflict. Any plugins installed can and usually do overwrite source and can make database changes. This can interfere with site performance, upgrades, plugin installs,...  morePlease ask SocialNetworking.Solutions to have a look. This could be from an old plugin conflict. Any plugins installed can and usually do overwrite source and can make database changes. This can interfere with site performance, upgrades, plugin installs, etc. The plugins you have may be the culprit in your issues. They can probably assist with removal of the consecutive bytes plugins perhaps. Just disabling plugins will not remove source edits they may have made to the core files in SE or database changes. Some plugins even still load their files after being disabled.  less