Yeah, this seems to be a problem for me also when running under Windows 7.
After install, you click on the icon that is created on your desktop but then windows 7 says that the app has stopped working. Initally I thought that the latest version 1.8a was not compatible but then when you right click and run as admin, it works fine.
I had to recrete the link on the desktop for this to work.
I'm sure these are all issues that will be worked out in time.
Fantastic app Terminals Team. Very well done.