Hi have the same problem.
I just re-installed SW4STM32 and created a new project.
But when I navigate to Project Properties -> C/C++ Build -> Settings -> Target, I only see “Current board target is invalid !”, and a “Define board target” button, which does nothing.
How can I fix this? This didn’t happen in my previous installation.
Version: Neon.3 Release (4.6.3)
Build id: 20170314-1500
Windows 10 64b