If you program is Lightroom 6, then you have posted in the wrong forum. Some how your thread got posted in the Adobe Premiere Elements Forum (video editing). Please re-post your thread in the Adobe Lightroom Forum to take advantage of the specialized expertise there.
There please give details of the install problem to help those responding help you.
At least one of your duplicate threads has been moved by someone from Adobe Premiere Elements Forum and is now appearing in the Downloading, Installing, and Setting Up Forum rather than the Adobe Lightroom Forum that I suggested. The link to the thread moved to the Adobe Downloading, Installing, and Setting Up Forum can be found
It might be a good idea to point all replies to the Adobe Downloading, Installing, and Setting Up Forum thread to avoid losing troubleshooting information in the go between more than one thread on the same question.