Calibre 0.9.33 has the dependency libffi.so.6, which is not available in debian Sid, therefore calibre is unable to start
32bit or 64bit?
status incomplete
Fixed in branch master. The fix will be in the next release. calibre is usually released every Friday.
status fixreleased
I'll upload fixed linux builds with the bundled libffi in a bit.
Sorry, was out for a while. 64bit in my case.
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32bit or 64bit?
status incomplete