Flow Designer Upload Date Error

I've designed a simple update flow using Flow Manager 7.0.1 with a single form asking 3 questions. The 3 questions contain a text field, a choices field matching a SF picklist, and a date field with a default of the current date. When you run the flow it successfully adds a new row to the Custom Object . The Validate test of the Flow Designer gives a "The Flow appears to be built correctly" message.

When I try to upload the Flow I get an error message (I would cut and paste but I have to run this thing on a Windows machine ... ) with the following:

"We had trouble uploading the flow. Question "PosNewOpenDate" has a default value with an incorrect date format. Please change the date format to yyyy-MM-dd and re-upload."

OK seems like it objects to an initialization (it defaults to current date). I change to the format specified and same error occurs.