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CCSv5 install fail while downloading eclipse

I need some help. I've tried to install both ccs_setup_5.4.0.00091 and ccs_setup_5.5.0.00077 on a laptop running Windows 8. While it is downloading eclipse, it says "An error was detected while performing the engine operation and the changes are being rolled back." It retries a few times, but eventually gives up with a total install failure. The anti-virus firewall was turned off. There are no logs in the install_logs folder.