[HM666]

I would advise that you disable the plugins globally if that does not work then you want to login to your AdminCP and check for Suspect Files. If you know what files you have uploaded for various mods and add-ons then you keep those files if you still use those mods but this will tell you if files have been modified. If there were modified and you did not modify them I'd report it to the host as you may have been hacked in some way. To check the files login to your AdminCP and go to Maintenance > Diagnostics > Check Suspect File Versions. Run that and it will tell you if files have been changed or if they are not what should be there. If you find many files that have been changed then just download the vBulletin version you are currently running on your forum and upload the core files overwriting the files. This may fix your problem.