As we were readying Visual RPG for .NET 16 for Visual Studio 2019, we discovered a bug in Visual Studio 2019. This bug inhibited the DataGate Explorer window from working in Visual Studio.
Microsoft very quickly confirmed the bug and the bug fix was provided in Visual Studio v16.6.3. To avoid the bug, you must use either Visual Studio 2019 version prior to 16.6.0 or 16.6.3 or greater with ASNA Visual RPG 16.x . We strongly recommend you update Visual Studio 2019 to 16.6.3 or greater.