Hi Vlad,
By default, GridView only displays modules and tables for which there is data in the Folder specified. So, check that the Folder you are pointing at actually contains some Adagio data. You may need to actually launch the Adagio module pointing at the data before the tables will become visible in GridView.
There is an option under Edit | Defaults that will force all the installed tables to be displayed, regardless of whether data is found.
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Andrew Bates