Migration Errors In SSMA Access

Hi guys.

I'm using the SSMA to migrate Access databases into SQL Sever. It's a pretty nifty tool, however, I am having some trouble fully migrating the data over.

When I select 'Convert Schema' the schemas for all the tables are created on the server and *all* the table names appear in the Server Metadata Explorer. There are the usual warnings about name changes and primary key additions and the like but importantly, the output window says that there were no errors. Scrolling through all the tables on the server explorer with the 'Table' tab selected confirms that the schemas for all the tables have been migrated, but for one or two of the newly created tables, the 'Data' tab shows the error message "Failed to retrieve data: Invalid object name 'NewDB.dbo.Pref'" for example. Consequently, when I move on to migrating the data, the operation fails for the tables showing these errors and the error message 'The table 'NewDB.dbo.[Pref]' does not exist in SQL Server' is shown when it is displaying in the Metadata Explorer. When I view the server schema in Management Studio Express, it confirms that they have not been migrated. I have tried to look at the failing tables' schemas and identify any similarities which might be causing them to fail migration but they are all very different so I don't think it's a schema issue.

Any ideas? TIA