I'm running iniManager 2.0.1.
After successfully installing KDTW, I decided to click on the tiles for my other installed products such as KLAX and KEGE. But each time I did that, iniManager would hang--I had to close iniManager using Task Manager. But this wasn't an issue with KDTW--I was able to freely click its title and enter the configuration view.
I decided to take a look at the KDTW, KLAX and KEGE installation folders in my Community folder, and I noticed KDTW has the scenery_config.json file while the others didn't. So I created an empty scenery_config.json file in the KLAX and KEGE folders, and that resolved the hanging issue for me. Just wanted to mention this.