Well it turned out I had to manually assign the java program to open, by default it only allowed me to choose from notepad or 7-zip, but now the cmd only shows up for a second before going way, and nothing happened. After printing screen, because it only showed up for a split second, it said: Error: Could not find or load main class. Is there anyone here that has had a similar, and can tell me a way to fix this? If not, I'll resort to Google, just thought I might get a better answer here.