Corrected type of gain vs reported type of gain, keeps kicking out as ERROR. Sold IBM stock that I have held for over 10 years and I classify it as L or long term gain.

Can't see what the error is in order to correct it.  Appears that it is classified as L in both spots on the Turbotax entry.  This is the exact error message.  "Capital Gain Wks (23 sh. IBM).  Corrected Type of GNn(Ls) should differ from reported type of gain (loss)."  What is it trying to say is the error?  Where do I check for the error.