Problem with conversion of nav3.7 to nav4.0 sp1

Hi everyone, Here is a new case to conversion of database from 3.7 to 4.0 !! The problem lies here is that when I try to convert the DB from 3.7 to 4.0 SP1, the message asking for the confirmation of the DB Conversion comes. As soon as the confirmation is given the application is automatically stopped wihtout any error message being given. Is there is some special setup that is required. Could this be problem relating to keys setting or there is some special procedure related to conversion of the DB It is highly urgent if someone could help me out of this. the current size of DB is 12 GB

How are you doing the conversion? It looks like you are accessing the Version 3.7 Database with a 4.0 Client. The best way would be to do a backup (fbk File) of your database and then restore it into a new database.

You can do your database conversion with just opening the database in a 4.0 client with no troubles (normally) if you are opening it LOCALLY. The 4.0 client will not work properly with a 3.70 Server.