Zimbra Ubuntu 10.04 LTS fails to install

[heroin]

I try to install zimbra opensource on Ubuntu 10.04 LTS with 1GB memory ram. I disabled apache and sendmail but instalatio fails.
Here is a error log.


Starting servers...Could not create the Java virtual machine.
Unable to determine enabled services from ldap.
done.
sh: Could: not found
Installing common zimlets...
com_zimbra_cert_manager...failed. This may impact system functionality.
com_zimbra_date...failed. This may impact system functionality.
com_zimbra_adminversioncheck...failed. This may impact system functionality.
com_zimbra_attachmail...failed. This may impact system functionality.
com_zimbra_email...failed. This may impact system functionality.
com_zimbra_social...failed. This may impact system functionality.
com_zimbra_linkedin...failed. This may impact system functionality.
com_zimbra_srchhighlighter...failed. This may impact system functionality.
com_zimbra_attachcontacts...failed. This may impact system functionality.
com_zimbra_bulkprovision...failed. This may impact system functionality.
com_zimbra_dnd...failed. This may impact system functionality.
com_zimbra_phone...failed. This may impact system functionality.
com_zimbra_webex...failed. This may impact system functionality.
com_zimbra_url...failed. This may impact system functionality.
Finished installing common zimlets.
Restarting mailboxd...done.
Setting up zimbra crontab...done.


Moving /tmp/zmsetup.07162011-020544.log to /opt/zimbra/log

Any help please.
Thanks

[Krishopper]

How are you executing the installation script?

[heroin]

./install.sh