In a many jurisdictions, a convicted criminal defendant who wants to recover for malpractice against his or her former lawyer has to obtain post conviction relief and prove that he or she was actually innocent of the crime for which they were convicted. This view has been criticized but still appears to be the majority view. Yet, a number of jurisdictions have recently decided otherwise.
Back in 2016, I reported that the Iowa Supreme Court decided actual innocence is no longer required as an element of the cause of action; and I just saw that it recently reaffirmed this new approach in a case decided this year. Here is the story which includes a link to the opinion.
Other jurisdictions that have held innocence is not a requirement include Washington, Kansas (also here) and Idaho.
UPDATE (4/15/2018): Thanks to Patrick J. Olmstead, Jr. who wrote to me to let me know that the Indiana Court of Appeals also abandoned the actual innocence requirement in a case called Beal v. Blinn, 9 N.E.3d 694 (2014).