Corrupted RAR file
 

This is what I am dealing with after successfully downloading *****. When trying to run install, each individual file gets an error message stating that it is an unknown method when trying to run RAR program on ther exe file.
What is causing this?

I hope you're not trying to launch the rar file thru LW. Could be a bad source. Some people don't take care when compressing files, doing other things on their comp instead of waiting for it to compress as a rar file. Thus it might not have compressed properly. IF you found this then you might need to get it from another source.