Hi there,
I am having the same problems with uploading the demo content and would need your assistance in this matter. Tried to compress the xml as explained to .gz, checked all my php settings which are correct, I changed already the host to have an own server and no shared, and I tried all the recommended steps – from uploading the full version to alt version, even the splitted xml files. Nothing works and I am on it since hours. Always get immediately the message ‘failed import’ – please provide me support asap to get the demo content run. I need to launch the site very soon and I have so much struggle with it. Thanks in advance – Ina