I've been running AMPPS 3.3 on my Windows 7 box for many months without any issues. This afternoon AMPPS popped up a message asking if I wanted to upgrade. So I clicked YES and proceeded. After the initial upgrade I could not load AMPPS. PHP complained about not being able to load any extension DLLs.
So I completely uninstalled AMPPS. Then I installed 3.4 clean. When I try to run AMPPS, it asks if I want to upgrade and then shuts down.