Monday morning, our application went live!! Hooray!!

All seems to be going well, although one user had problems when starting the application:

The problem occured even before our application had downloaded. Notice the component/installationprogress.xaml: That's not ours, but belongs to the framework.

I have seen these problems from time to time. We tried to fix it by re-installing the framework. (Sometimes, people have 6.715 instead of 6.920). That didn't work.

In the end, we simply had to discard the users profile. I made a copy of the profile, so maybe I'll find the time to look into the issue in-depth, but I wanted to blog about it, because someone might be running into the same issue.