Hi,
Would you mind to share with us your SharePoint and QWP version? Also if you can export your lists and web parts and some screenshots and attach them to the tread would help.
For the Save error it looks like the web part expects an HTTP parameter called ID (i.e. …yourpage.aspx?ID=123) and the ID is not provided. Also I'm wondering why the error happens on AllITems.aspx page.
Thanks,