Here's the specific sequence of steps for IntelliJ for a new project
1. File > New > Project
2. From left tab, select TornadoFX
3. From the right screen, select tornadofx-maven-project
4. An app will be generated
5. Ignore any update warnings
6. Edit pom.xml line 13 to use <kotlin.version>1.1.50</kotlin.version>
7. Create an Application run configuration to test MyApp
8. Add in your source files
Look right @edvin ?