Hi I am very new to Ubuntu therefore i will appreciate step-by-step guidance

While installing user level files I get error as below:

Installing user data files...done
Initializing user data...done
Creating desktop icon...done
mv: cannot stat `/home/user1<user>/zdesktop.tmp/index/*': No such file or directory
mv: cannot stat `/home/</user>
user1<user><user>/zdesktop.tmp/store/*': No such file or directory
mv: cannot stat `/home/</user></user>
user1<user><user><user>/zdesktop.tmp/sqlite/*': No such file or directory
mv: cannot stat `/home/</user></user></user>
user1<user><user><user><user>/zdesktop.tmp/zimlets-deployed/*': No such file or directory
Zimbra Desktop has been installed successfully for user root.</user></user></user></user>


If I ignore the above and continue with launching of the desktop client following error appears:

LoadPlugin: failed to initialize shared library /usr/lib/mozilla/plugins/libtotem-cone-plugin.so [/usr/lib/mozilla/plugins/libtotem-cone-plugin.so: wrong ELF class: ELFCLASS64]
LoadPlugin: failed to initialize shared library /usr/lib/mozilla/plugins/libtotem-gmp-plugin.so [/usr/lib/mozilla/plugins/libtotem-gmp-plugin.so: wrong ELF class: ELFCLASS64]
LoadPlugin: failed to initialize shared library /usr/lib/mozilla/plugins/libtotem-mully-plugin.so [/usr/lib/mozilla/plugins/libtotem-mully-plugin.so: wrong ELF class: ELFCLASS64]
LoadPlugin: failed to initialize shared library /usr/lib/mozilla/plugins/libtotem-narrowspace-plugin.so [/usr/lib/mozilla/plugins/libtotem-narrowspace-plugin.so: wrong ELF class: ELFCLASS64]
LoadPlugin: failed to initialize shared library /usr/lib/mozilla/plugins/librhythmbox-itms-detection-plugin.so [/usr/lib/mozilla/plugins/librhythmbox-itms-detection-plugin.so: wrong ELF class: ELFCLASS64]
/home/user1/zdesktop/bin/zdesktop: 271: [: Illegal number: $[3995312*1000]

Though client window pops-up but nothing is displayed on it. My machine's configuration is HP Pavilion g6/ Ubuntu 12.04 LTS/ x86_64. Please help asap. Thanks