Share your thoughts on DirectQuery for Power BI datasets and Azure Analysis Services (preview)

I apologize if this has been asked and answered, or not the correct forum, but recently, I imported a Power BI dataset (streaming dataset) into PBI Desktop.  It was working just fine, but last Thursday, I started to receive an error message that the "database doesn't exist or I don't have permission".  Permissions are not the issue; the error message may be related to "Add to Local Mode".  Did something recently change?