Looking through the vBulletin bug repository, the mutli-quote bug was supposed to have been fixed for our current version. However, it looks like it is still affecting a few people. Here are the suggested fixes from the bug tracker:
* Delete all of your PSO-World cookies and log back in.
or
* After you have finished multi-quoting all of the desired posts, click "Reply with Quote". Click the "Go Advanced" button. Post your message and the multi-quotes should be deselected.
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