How can one check what scripting language has been selected for a project in TC 12.42?
There are 2 ways how you can know the chosen language.
1. Select Project Name in the Project Explorer, then select menu item View | Select Panel, choose Properties. Properties panel will appear showing project's properties (including the language). By default this panel is hidden.
2. Double click any script unit and observe status line of TestComplete. It displays language there.