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Cassandra BramucciCassandra Bramucci 

I am getting the following error when I try to run Lightning Migration Assistant: This page has an error. You might just need to refresh it. Assertion Failed!: $A.addValueProvider(): '$Record' has already been registered. : false >>> Any ideas?

I am simply trying to run the Migration Assistant, no custom code.  I've tried 3 different browsers, no joy.  Tried rebooting even - for some reason that cleared the error, but it came back again when I switched to sandbox to do my testing.  Now I am getting it in all sandboxes and production when trying to run this function.  Any ideas?
George BustosGeorge Bustos
Have you figured this out? I am getting the same error when I try to run the migration assistant
Cassandra BramucciCassandra Bramucci
I'm still getting the error on both production and in my sandbox. No one seems to have a clue...