ADE freezes and crashes

While downloading an epub, ade freezes by the end of the download, before the download counter has disappeared. When closing ade, ade crashes. When opening ade the book is present in the library. When right clicking the book and clicking read, ade freezes. Then when closing ade, ade crashes. This only happens for some books, not all.

I have tried uninstalling ade and deleting all ebooks. Then the first download succeeded, and i can read the book. The second download ended as described above.

Is there a solution for this problem?