Dunolde

I spent several hours yesterday downloading the 7 files necessary to install DCS World. Now, about half way through the install, I get an error message, that some part of the install file(s) is corrupted and the install cannot proceed. The file is identified, but I have no way of knowing which of the 6 bin files contains it and I don't want to spend hours and hours re-downloading all of the installation files. How can I get this fixed or get help to do it? :cry: Thanks.