I’m no programmer/developer and I didn’t read all the comments yet, but I’d think the problem lies in the size of the files that the xml data is trying to retrieve. I think the images are just too big.
The fix: run all images through a minimization tool (e.g. tiny PNG) from the original swift ideas DEMO website, THEN create an XML export. There’s probably at least 500MB – 1GB of images referenced in that xml file. it’s like downloading a fresh copy of PhotoShop or something…