check your installation logs to find the problem: http://helpx.adobe.com/creative-suite/kb/troubleshoot-install-logs-cs5 -cs5.html
if you're not up to doing that yourself, contact adobe support: http://www.adobe.com/support/chat/ivrchat.html
check your installation logs to find the problem: http://helpx.adobe.com/creative-suite/kb/troubleshoot-install-logs-cs5 -cs5.html
if you're not up to doing that yourself, contact adobe support: http://www.adobe.com/support/chat/ivrchat.html