Calibre-4.0.0.dmg and Calibre-4.1.0.dmg: error while trying to install
Rebooting does not solve the problem.
I have a Mac mini and an iMac 5k, both with OS X 10.11.6 El Capitan. When I doubleclick on the .dmg file, I get, after a few seconds, both with 4.0.0 and 4.1.0, the message:
Keine aktivierbaren Dateisysteme (no mountable file systems)
Would appreciate any substantial help very much. Thank you.
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