Apache2 Stopped Working After Installing TCS

I have installed the software called TCS with my Apache2. After it completed the installation, my Apache suddenly stopped working. I could not be able to run it again while TCS is there. How can I fix this? I have been searching for troubleshooting guidelines about this but I could not find in two days time already. I tried to uninstall TCS and then Apache2 start working out fine. But when I reinstalled it again, Apache2 stopped working again. What is really wrong? Please help me find ways to resolve this problem. I need them work as soon as possible.
