You have some security software on your computer, or there is something about your network, that is preventing the app from functioning as intended. Unfortunately, an individual’s computer and all the third party software they have installed on it varies so greatly that we are unable to provide any more help than that.
I tried manually installing Butler but that has not helped
There is no way to manually install butler in a way that can be used by the app. Installing butler manually is only for developers who wish to use the command line tool directly.
In order for the app to function it must complete its own setup process, and any other software on your computer that gets in the way of that will prevent the app from being fully installed.
Hope that helps