I have an Office 365 SharePoint 2010 site. I am trying to display a library from the parent site into a child site. I have been unsuccessful trying both SOAP and REST . Each time, in the Data Source Details pane I recieved error "The server returned a non-specific error....." after selecting my data source from the Data View menu in SP Designer. I've been at this for days, reading everything I can find about how to display a list/library on another site in a collection. All the articles make it sound so easy, but I can't get past this error. I have tried the different available authentication methods to no avail. I have seen articles about editing the web.config file. It is my understanding this is not possible on an Office 365 account.
Greatly appreciate any help solviong this error issue, or another suggestion for displaying library from parent site into child site. I cannot use CQWP because it does not allow me to filter on a multi-choice column.
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