Hi, apologies for the bump, but I have a similar issue that I wonder if anyone else is facing.
I had Speedtree 4 working on Windows 7, but recently it seems to have simply stopped working. When I try to launch Speedtree 4, it appears in the Task Manager for a second or so, but then it disappears.
I have tried changing the compatibility mode and running as an administrator, but the program will simply not run. Not much has happened to my computer aside from a few Windows 7 updates, and a few non-Windows program installations/uninstallations.
Others I contacted seem to not have encountered this issue on Windows 7 + 10, and Speedtree 5 + seem to be working fine. Any idea as to what might be causing this problem?