Incompatible with your current version

Since I downloaded the new update I am constantly having an issue when closing and re-opening PowerBI files.  I will be working on something, close it for half an hour and then re-open it and I get the below error. I am running version 2.66.5376.1681 (February).  When I click "download the latest version" it opens up the app store, I've already got the latest version installed so it just says open app.  Usually this would allow me to open my file but today it is no longer working.

Help please