[Steven Zahm]

@ H.Dupont

re: Is the problem coming from the fact that I am working in local with the software Instant WP ?

I suppose, I am not familiar with the product. All I can say for sure is that the Connections tables do not exist and are not being created as they should be. Since this is a local install, does the database user have permissions to create tables? If the user you setup does not, then the tables will not be allowed to be created.