The download page for calibre says:
Quote:
calibre 2.x uses Qt 5 which is known to be incompatible with some Windows XP machines. If you are using Windows XP and calibre crashes soon after startup, use calibre 1.48, which works with all Windows XP machines, from here. Simply un-install calibre 2.x and install 1.48, doing so will not affect your books/settings.
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In fact, the problems are so severe that starting with the release coming on Friday 29/8, calibre 2.x will refuse to install on XP. Your only choices are to stay on 1.48 or to upgrade Windows.
Pour être clair -- calibre 2.x ne fonctionne pas sur XP. À partir de vendredi 29/8, calibre va refuser de s’installer sur XP. Vos choix sont 1) rester sur 1.48, ou 2) installer windows vista, 7, ou 8.