I had the same problem, and I've seen many others have it too.
Solution:
1. Open your Task Manager. (ctrl+alt+delete)
2. Click the tab "Services".
3. Find the service called "Greg Service".
4. If this is open - Open your cmd, write msconfig and click enter. (If not, then your problem lies elsewhere)
5. Click the tab "Services".
6. Find the service called "Greg Service" again.
7. Uncheck the box and click apply.
8. Restart your PC.
9. ???
10. PROFIT! (Now it should run just fine

)
I hope this helped you as it helped me, thank you and have a good day.