Hi,
Thanks for that link, I have subscribed to it.
Obviously, there is more to this than is apparent as a plain .Net 7, Blazor server, Blazorise app works but a default ABP 7, .Net 7, Blazor Server app is somehow different and an issue involving the ASP.Net Core / SignalR connection and streams is exposed in that scenario.
If you leave this thread open then we will post here once MS has resolved the issue that they have found, and we can verify that FileEdit and FilePicker once again work with ABP 7.0 / .Net7, so that others can see.
Thanks