“Invalid settings” when starting the “ArcGIS viewer for flex”,

“Invalid settings” when starting the “ArcGIS viewer for flex”,

Please, have a look on the screenshots below

Attachment 20106, Attachment 20107
I there any reason behind getting the message “Invalid settings” as I started the “ArcGIS viewer for flex”?

Thank you for the help,

Best

Jamal

Attached Thumbnails