Locate which security is having the issue.Review the Price History for this security. You might have a corrupted price quote that was downloaded. Delete or edit the bad price quotes
Are you that's an investment transaction for 12/31/17? Or could that be a downloaded price quote with a date in the future? (Usually bad price quotes can appear with a date in 2038)
A common source of IRR errors like this is when you have shares Added or Removed. Look at any of these transactions carefully and (after doing a backup) try deleting and re-entering them.