No need for that plugin. When I did this, there was a lot of 'funkiness' with paths to files, but I have SV embedded in a Page (that is, the script block is in the Page content/body directly) without further plugin effort needed. After all, the embedding part is pure HTML/script goodness! ;)
For files, imageData.xml, viewer.swf are in the wp-root, as are my /images and /thumbs directories (and frankly all other SV stuff... everything in the wp-root).
I can't remember what I did to buildgallery.php -- I thought I changed some things but I don't see the changes at the moment. My directory paths at the top are both blanks (i.e., root).
Ahh, but now looking into my imageData.xml, I see what I did... I think I manually ended up fixing up paths there:
and then in the CDATA block for each image:
I think the 'trick' there is that the stuff is executing for my permalinks as a subdirectory (i.e., http://some.wp.site/gallery/), so the ../ forces it back up to the root. That was with 1.5 -- don't know if 2.0 permalink processing changes things.
I haven't looked at this in like 6 months now... there's probably a much better way to integrate this, and in fact I'd now write the XML-generator as PHP code to generate >full< URLs to the pix. Though the root imagePath and thumbPath are still a problem, would probably have to generate full local paths to them, embedded.
And, I've just moved my main site code over to 2.0.1, and I'm learning about building rewrite plugins, so might be able to eventually make a one-stop-shop for SV. Just not yet. ;)