I am on Windows 10 and was using the latest version 4.6.1.
I thought I would try out the beta version. I went to preferences and checked the beta option. Nothing happened. I assumed I needed to restart the application. I did so, and could see on my network monitor that something was being downloaded. After the download finished, nothing happened. Ok, again I assumed the program needed to be restarted. So I restarted the application. The hourglass icon showed for a second and then nothing happens.
Now if I click on the inkdrop icon that is all that will happen. Hourglass for a second, and nothing happens. i.e. inkdrop does not start. If I look in the Task Manager running applications I don’t see anything with inkdrop.