Fails silently if it tries to replace an already running application

[gblazex]

If you have an old instance of your program running from the Applications folder
and people launch a new instance (let's say from the Downloads folder) the moving will fail silently as it cannot replace the already running application.

What the system does when you e.g. drag and drop the new one into the Applications folder is show you a Warning message:

"The operation can’t be completed because the item “XYZ.app” is in use."

I think LetsMove needs a customizable warning message where we can say "Close the old version of XYZ so we can replace it in your Applications folder."