Visual Studio 2017 RC updated to V15.8.0

I had a working TinyCLR 1.0 preview application. All of a sudden I receive
This project needs to be migrated.

I have never seen this before and I was wondering what happened.

I can just make a new project but I thought maybe someone here would know what I did wrong.
(I reopened a working app and got the message.)

Capture

Hard to say without seeing the project. I’d probably make a backup of the project, migrate as VS suggests, then compare the .csproj for differences.

Today is was upgraded again VS2017 from 15.8
0 to 15.8.1

Check did this appear after this.

I had to do a repair (Takes forever) and now I have version 15.8.0

I may wait a bit before I update again.

Something happened to my app so I threw in the towel and created a new one.

migrate as VS suggests.
I looked but I could not find out how to do it.
Got tired of looking…

For future reference: I believe to migrate you can right click on the project in the Solution Explorer, then click Reload Project, it should give you an option to migrate.

Thank you!