ianhunter2018

OK, I got 3.0.7 installed, but I still have the original problem, so I'll open a different issue. Feels like progress, thanks.

I pulled out the manual assignments of the output and as expected, I get the error I had last time: The Lightning Component c:fsc_dualListBox3 generated invalid output for field selectedOptionsFieldDescriptorList....

No luck. I still get the "The Lightning Component c:fsc_dualListBox3 generated invalid output for field selectedOptionsFieldDescriptorList. Contact your administrator with these details: Flow encountered an error when processing and converting...

Additional note: I created a test flow with just an assignment element and a screen element, where the assignment element sets up three collections of strings (id, label, selected) and...

This is still failing miserably -- you cannot use DualListBox3 with Strings at all in any browser, it's completely dead.