Frozen screen

[decorators3]

I don't know what  happened or why , but I was changing my terrain perimeter and suddenly  this blue circle appeared and my program froze -  can't close it or save it - If I Leave it long enough will it work it way around and let me work on my project.  I'm afraid to shut down my computer in case I loose what I have,

 

I checked out the error encounters on CHief but none if it works if I cant access the edits or saves or anything else

 

Has anyone encountered this issue?

 

Thanks in advance

 

Levina

[GaryOhmer]

Had that exact problem - boiled down to the nvidia drivers - went back to 528.02 and all is well