Sage 100

In upgrading a customer from 2015 to 2017, I am getting this error when trying to convert the company: "Error: "The TimeCard module needs to be reinstalled." ID90364 doesn't apply. This company has never had TimeCard so I can't delete it.

I have a client who is on a unix server using a very old version of Mas90 (I believe 3.xx) What's the best way to migrate to a windows OS using Sage 100 ERP 2015? Is there a utility that I can use which will convert those files?