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Whats on line 3 & 33 of the of ../../ventrilo/admin/index.php file?
The error is telling you that something on those lines is incorrect....probably a directory path...but starting with that third line, you'll probably be able to figure out whats not right.
You could also check the modules developers home page to see if they have any bug fixes or updates etc. That would also be a good place to inquire or look for the block info you need.
(I don't use that module, so I wasn't readily able to check it at the moment)