Hi

I've checked out a few pages and the only JS error that I see is
Code:
scW("scw") is null
Now that's nothing to do with the Updater... If you have Firebug (for Firefox) you can see the XMLHTTP requests and responses happening with no problems... If there is a specific page that is causing errors PM me a link to it

It looks like the Updater is having difficulty getting a handle on the H2 that contains your price... If you want you can send me your FTP details (it may be preferrable to set up a temporary account) and I will take a look

Cheers

Dan