Please make a copy of your return and proceed from there. Let us know how it goes. 

Thank you for choosing TurboTax.

Good suggestion. I had already tried.

Tried a new copy, different browser - same result (sad puppy).

Please post further suggestions. It seems there are other people with the same problem.

Did you happen to import your data from last year?

Yes I did. I was deep into the return, doing final review. I had just clicked a bookmark to go back and check something when it crashed.

Unfortunately, the only workaround at this time would be to start your return without importing last year's information if you have tried different browsers and cleared cookies and cache. 

Please let us know if you were able to submit your return successfully if you do not have any of the locked forms.

Thank you for choosing TurboTax.

Time to move to a Canadian company for my tax software!