Business Solutions Yahoo

After Apple software upgrade, wife can’t access Yahoo Business e-mail –LaunchCascadeError-ymws message?
In Safari, when she tries to access her Yahoo business e-mail, she gets a screen that says “Ouch! and an error message that includes “LaunchCascadeError-ymws.” A Google search shows this is a known error . . . but I can’t find a solution so she can access her e-mail again. Help!
isnt that program finished? i thought i got an email saying they were closing that program
Tim Sanders: Former Yahoo Chief Solutions Officer, Best Selling Author, Keynote Speaker