We have not observed this behavior in recent versions of the Option B workbooks. If you are using the Excel workbooks distributed with Option B version 6 or later and have this problem, please contact us so we can investigate the issue. If you are using an earlier version of Option B and cannot paste data into one of the forms, we recommend that you upgrade to the latest version of Option B.
Another potential issue has to do with how you paste the data. We recommend that you paste data in by the column. Be sure that you are pasting your data into the correct columns in Option B. Pasting it into the wrong column may trigger validation messages.