Yes. I am using the overdrive software.
I set the Clip to MTP as you suggested but I still can’t download and get the same error message…
Hmmm . . . have you checked with your library? Overdrive support is supposed to be available there. I looked, and I don’t see any Help section, FAQ or any support whatsoever on the main Overdrive site.
There have been a lot of people come and gone around here that use (or have used) Overdrive and downloaded library books and I can’t say as I’ve ever seen this error come up in any discussions before.