I just started having the same problem. The odd part is that I installed Engine DJ 2 a few days ago. It worked fine at first and I even did a gig on the weekend with music I’d added to my Engine 2.0 library and exported to my gear that’s also been updated to version 2. Everything has worked fine until today.
Now I go to open it today and it won’t start. I get the loading screen appear as shown below. After a second or 2 it vanishes and nothing further happens. I’ve opened task manager and there is nothing in apps or background processes to indicate that it ever opened. I’ve restarted my computer and tried running it in administrator mode with the same results. I also ran the Engine 2.0 installer and used the repair install option which didn’t fix it.
An additional note. The only thing I can think of that changed is that Windows installed an update over night. I’m not sure if that would have anything to do with it but I just thought of that when I noticed “make sure they have all the latest patches installed via Windows Update” as a suggestion.
Another update. I did a system restore to revert windows back to before the last windows update and now Engine works again. So it seems the fault was Microsoft’s and perhaps you should hold off on any windows updates at the moment.
The specific update that messed up Engine is this one