Subject line says it all.

OS: Mac OS 10.5.4
Version of Stanza: Beta 11
Description of issue: When I try to open epub books, I get gibberish--nonsense characters, etc. I have tried with several books. All are unsecured, and all open fine in ereader.
Output from Console: 8/12/08 Tuesday, August 12, 2008 3:59:59 PM [0x0-0x6d96d9].stanza[10100] stanza.util.Log FINE 15:59:59: Chapters: [60] confidence: 0.0 [0.0]

Since a screenshot won't work here, this is what I get: ??›³?o€???ªú?o€???º)?o€
??Èê?o€???Ø0?o€???çP?o€???ö1?o€????K?o€????K?o€???#??o€???1í?o€???@ª?o€???O›?o€???^j?o€???lé?o€???{–?o€???Šµ?o€???™D?o€???§Æ?o€???¶´?o€???Æ3?o€???Õt?o€ ??ä¦?o€!??ô=?o€”???€?o€#???¡?o€$??!½?o€%??0g?o€&???§?o€’??NÃ?o€(??]ø?o€)??lØ?o€*??|6?o€+??‹e?o€,??šN?o€-??¨ù?o€.??·ê?o€/??ÆR?o€0??Õ‚?o€1??ä=?o€2??óU?o€3???