I recently updated to 3.9.9 and for some reason I can no longer open file using File>Open. After selecting the file in the file dialog, control returns to the document frame but the file is not actually opened. I am running it on Windows XP and have the wx.FileDialog option set. Dragging and dropping works, however.
Yes. This is a bug Franz reported, and I forgot to fix.
You'll have to use the normal dialog for the moment (sorry).
This is fixed for the next release.