We are in the process of setting up a library w/ Book Library Pro on a J1.5.26 site. All has gone well so far - except for a strange glitch. All of the books that were assigned the category of "Fiction, Adult" are not showing the category, nor will a book accept any category.
Opening a book, clicking on a category and saving does nothing. So, I created a new category of "Fiction - Adult" and attempted to open the book and save it in the new category. Still nothing. Then, I deleted the book and tried re-importing the Amazon data. It told me that "a book with this ID already exists" - even though it had been been deleted. So, I tried again - assigning an ID of '1000'. That allowed the import, but going back in and assigning a category did nothing.
Any ideas as to what to try next?