The database you are attempting to replicate can't be converted. (Error 3487)

Only databases created with version 3.0 or later of the Microsoft Jet database engine can be replicated. Although you can open the database by using an installable ISAM, you cannot convert it to a replicable form. If the database was created by using an earlier version of Microsoft Jet, convert the format to the newer version by going to the Microsoft Access Tools menu, pointing to Database Utilities, and then clicking Convert Database. If the database is in another format, export the data to a new Microsoft Jet database and retry.