The Launch function in LW is not designed for opening programs that may have viruses, etc. It's designed for opening media files like videos & music. So open the program outside of LW. Scan it 1st with your AV program. For fast & easy access, go to your LW Library window, select Saved Files folder & press the Explore button. Sample image here:
Using Library Explore button to access downld folder (click on link) & the folder will open up for you.