Comment 34 for bug 1523291

This is definitly a problem with the latest OSX (10.11.4 or even 10.11.3) and Calibre.
I have my Aura HD since ~fall 2013 and I never upgraded its firmware but I always upgraded OSX and Calibre. I have never seen this error before and suddenly (after roughly 5 months of not using it) I can no longer connect my Aura HD to Calibre because of this error.

To be honest I have no idea what do to now. As I managed my collection (mainly comics and manga in self-created CBZ format) completely with Calibre I'm totally lost now and unable to update it with further stuff to read.