I am glad that problem is solved for the both of you..

What do you think/suggest, do i have to open a new thread for the blocked crowncave entrance?
I have taken screenshots of this phenomenon/bug(?).

I was surprised how easy and close the cave enrance is to the road (post-1.4) I figured to do some mountain climbing but it was an easy walk. The stone was there as promised.

It's always been there. They didn't move it.... but there was no reason pre 1.4 to look for it.

I got in and got the crown fine, there was no giant stone in front. Try uninstalling mods is all I can think of. I play on consol so I don't know

That's not in the Reeking Cave anyway.