I bought vb well worth the cost, not a big cost, and its 100 times better then any other bb systems hands down, its quality.
To answer your question, the parse error is probably a result of you changing a variable and accidentally deleting a quote or something.
If you post your config file minus your passwords then we can probably point it out.
Also vbulletin.com will probably give you a lot more help on this then we can they are the experts...
