Hello Everyone,
My SGP was working properly until now, so it may be caused by Windows update… but I am not sure.
When I click to start SGP, the traditional window with credits opens, the last message I can see is “Initializing Logs” and then the window disappear and nothing after that 
I was using the last stable version (3.2) when the problems started. I upgraded to the new version (4.0) and the problem remains the same.
I appreciate if anyone has any idea to solve it.