I use version 6.4.3 of Jaspersoft Studio
I created Data Adapter on example CSV file from Studio guide https://community.jaspersoft.com/system/files/restricted-docs/jaspersoft-studio-user-guide_5.pdf,
Then I created Dataset according guide, but when I use it in Map then I have error "Query language not set".
I tries to set up language in dataset. For it I use "Dataset and Query Dialog". I just select as language "CSV" and then presses on "OK" button. But nothing occurs. Dialog don't closes. I have no any error messages.