If there are conflicts during installation are you replacing the files or keeping the old ones?
Initially after this happened, I uninstalled the DA extension and then reinstalled it, initially looking at each confilict and selecting new. After 10 minutes of that, I clicked "Yes to All" on the last.
I then uninstalled the last extension that I had downloaded (Digital File Pro 2.0.2) and reinstalled it slecting Yes to All thinking it would have the latest versions of any common components.
BTW, has anyone at WA ever counted how many times you have to click the yes / no ... dialogs to replace 1 newer extension?