Many errors are caused by the security rights the application needs and this is established the first time when the program is installed. Please, completely remove the software and use a registry cleaner to clean the leftover registry files. For this operation, you can use CCleaner as it's an excellent solution.
Once you complete this operation, try to install the product again. You need to use the Run as Administrator handle when you right click the setup file. Also, make sure that you meet the system requirements for TCOS as these applications might need additional modules in order to run properly.
