Windows Live Mail calendar contains corrupt data

I get the attached error when trying to start Windows Live Mail. I had to replace the motherboard in the computer and it had been working fine when I shut it down and then it simply would not start again. Replaced the motherboard this morning and get the following message. I did try some of the solutions I found online including going into programs and features and repairing Windows Essentials but is still not working. If it makes any difference I don't use the calendar at all so would have no problem deleting it if that make it easier. I don't really want to recreate a new user as I have a lot of e-mails I want to keep.

Thank you