I cant re-install Lightroom 3

I am failing to get Lightroom 3 running, when I try to reinstall it. I first get a message that it opeens the catalouge DSC_0248.NEF.lrcat and

then I get another message  that Adobe Photoshop Lightroom 64-bit has stoped to work. A problem has made that the progam has stopped to work. The program is shut down and you will get a message if there is a solution to the problem. I get no message. I even have tried to istall Lightroom 5, but get the same message.