Could not find phrase 'reportbadpost_nodiscuss'.

First, try this. Reupload the original vbulletin-language.xml file to the install directory. Then upload the tools.php script in the 'do_not_upload' folder of the vB zip file to your Admin CP directory and run it from your browser. Then reimport the vbulletin-language.xml file. Immediately remove tools.php when you are done.

Then run this:

Admin CP -> Languages & Phrases -> Language Manager -> Rebuild All Languages

If you still have this problem after that, reupload all the original vB non-image files (except install.php). Make sure you upload these in ASCII format and overwrite the ones on the server. Also be sure to upload the admincp files to whichever directory you have set in your config.php file. Then run 'Suspect File Version' in Diagnostics to make sure you have all the original files for your version:

Admin CP -> Maintenance -> Diagnostics -> Suspect File Versions

Next, disable all plugins.

Note: To temporarily disable the plugin system, edit config.php and add this line right under <?php

define('DISABLE_HOOKS', true);

Then if you still have this problem, create a new style and choose no parent style. This will force it to use the default templates. Finally empty your browser cache, close all browser windows then try again. Make sure you change to the new style and view your forums with it. Do you have the same problem?