Please install the binary calibre release from the Download page on the calibre website.
Distro packages are not supported by the calibre developer, but if you have the same problem when using the prebuilt binaries then it will get fixed.
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Distros are known to patch calibre in unwise ways, and additionally you are now running an old version -- we are on 2.63.0 now, not 2.55.0
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