If it's legal and all, I'd advise contacting vBulletin support.
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If it's legal and all, I'd advise contacting vBulletin support.
Send me one of the files thru pm plox :).
Redownload it and just overwrite the files. Without touching the MySQL databse, The DB is were all the posts and members and everything is so it shouldnt matter but somebody should verify this.
Re upload the files (NOT CONFIG.PHP & INSTALL.PHP)
That should fix it, if someone didnt delete it check the CHMOD of the files.