Q Light Controller+

When i try to open last file. Shows:

unable to access resource

and i can`t open the file. I close the file normally last time.

Attach capture.

Windows 10 - QLC+ 4.11.1

Did you try to navigate to this file manually (through explorer)?
And if you see the file where it should be ... can you open it with a text editor?

After a major Windows update it happened to me, search the folders if there is a new user with ".0" after the name, your files are in the old user file