Install fails: Warning: ZipArchive::extractTo():
Open the install.php file and look for this code on about line 110:
$zip = new ZipArchive;
Remove this code.
Remove any files that the installer created (eg: includes, .htaccess, images).
Re-run the installation and it should work.
If you would like assistance please send in an email support ticket and we can help: http://ultimateclientmanager.com/support/support-ticket/