Sony vegas pro 13 stuck at creating windows at start up

[MrKirby]

Hey everyone,

I am not sure if this is the right place to post, so correct me if I did something wrong.

whenever I open Sony Vegas Pro 13 on my new laptop:

- Windows 10 (Updated from 8.1) - Didn't test it on 8.1
- nvidia 960m

Drivers up to date (says IObit Driver Booster)
And I have no clue how to fix this... I unistalled, reinstalled, restarted.. in every posible sequence.
It didn't get me any further...
It doesn't give me an error, it's just stopping..
I waited over 5 hours ( I left my pc on and did something else in the mean time)

This is what it looks like (it takes less than 2 seconds to do all the other, but it is stuck here:

 

[MrKirby]

Oke, somehow it worked out of nowhere this morning, so it does work again... I didn't change anything... So I am comfused, but it works, and that's wjhat counts...