When installing Zimbra Desktop on Mountain Lion 10.8.1 , Zimbra desktop not starting anymore. Looks like the old 1.6 Java 32 Bit is removed by the installier. in the zdesktop.out you find

--------- log extract
CONFIGS = /Users/oj/Library/Zimbra Desktop/jetty/etc/jetty.xml
JAVA_OPTIONS = -client -d32 -Djava.awt.headless=true -Xms32m -Xmx150m -Xss150k -XX:MinHeapFreeRatio=20 -XX:MaxHeapFreeRatio=40 -XX:NewRatio=4 -XX:TargetSurvivorRatio=70 -XX:+UseConcMarkSweepGC -DSTART='/Applications/Zimbra Desktop/jetty/etc/start.config' -Dzimbra.home='/Users/oj/Library/Zimbra Desktop' -Dzimbra.config='/Users/oj/Library/Zimbra Desktop/conf/localconfig.xml' -Djava.library.path='/Applications/Zimbra Desktop/jetty/../lib' -Djava.awt.headless=true -Djava.io.tmpdir='/Users/oj/Library/Zimbra Desktop/data/tmp/java' -Djava.net.useSystemProxies=true -Dsun.net.inetaddr.ttl=10 -XX:HeapDumpPath='/Users/oj/Library/Zimbra Desktop/heapdump/' -XX:+HeapDumpOnOutOfMemoryError -Djetty.home='/Applications/Zimbra Desktop/jetty'
JAVA = /usr/bin/java
Starting Jetty:
STARTED Jetty Mon Aug 27 09:38:46 CEST 2012
Jetty running pid=13049
Error: This Java instance does not support a 32-bit JVM.
Please install the desired version.
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Is there a fix or hack that zdesktop works with the java 64bit version?