I know there are several similar questions but I didn't see one that was completely relevant: I've cleared and re-authorized my computer for ADE several times while trying to solve a problem. Now I can neither read nor return the Open Library books I borrowed, even using the original ID with which I downloaded [It was the "No ID" option - I just read that this may be a big part of the problem?]. I've re-activated every authorization ID I have, restarting ADE each time. Error msgs include: "No record of this book," "Unable to load book," "Book borrowed using different account." Also, at this point, I fear I've hit, or am soon to hit, my limit of authorizations. [Does anyone know what the limit is?] I sure hope someone can help me. Thanks!