Error message in returning a book using Digital Editions

Recently I have been unable to return books through Digital Editions to the eLibrary when I've borrowed them.  I get the following error message:  E_BAD_LOAD_ID.  When I go into the eLibrary, it no longer shows the book as checked out to me, but in Digital Editions, the book remains in my library, even after it has expired.  Should I uninstall, and then reinstall?  If I do, will the books still in my library that I haven't read yet disappear from the library?