app.powerbi.com - no dataset after upload

Hi,

I signed in on MS Power BI (https://login.microsoftonline.com).
After logon i get a empty workspace.
Now i want to import data from a local file (123.csv)
I select "Get data" button, "Local Files" button, and selected the file to import. 
Power BI uploads the CSV file (wait...) but does not add a new dataset. Nothing happens....
What do i do wrong? 

Rob.