I’m having a very strange issue. In our app, I have Content Pages, in Help folder in the root of the app. Within the help folder I have a bunch of Markdown files with a .md extension. These are served with the a route, for example:
Not sure why it’s returning 404 it might be masking an error, it should process the page like it does for Docs App which is built with Razor Markdown: https://github.com/ServiceStackApps/Docs
If it’s a self-hosting App you would need to make sure the Content Build Action of each .md file to Copy/Copy if Newer so that the files are copied to the /bin directory so they’re available at runtime.
But otherwise we’re not directly supporting v3 ourselves, you’d need to upgrade to the latest v4 for us to investigate any issues.