Hello, I'm trying to install a mod of the CBQ EMD SD7 and SD9 for then have a UP EMD SD7, I don't know what press here.
Most people these days use 7Zip to install RWP files. Download (7-zip.org) It is pretty easy to use just open the file and extract it by pressing on the blue extract button and then showing it where to install it. Just find your Railworks folder and install it there.
When you extracted the downloaded file with 7Zip what was the file inside? If it was a *.rwp file then extract that file with 7Zip - you should then have an Assets folder and you can copy that to your railworks folder. You might have to then copy the geo files from the UP SD7 to the CBQ. Where did you download the file - someone else can have a look Peter
Your screenshot looks as if you are using the Utilities Program that comes with TS. That should install the RWP file directly into TS no need to use any other program to install it. How to use Utilities. Open it then click on the package manager tab, in the next window select the install button in the window that opens find the RWP file that you want to install, and press ok or whatever it is in Italian. This will install everything directly into TS no playing around with winrar etc.