First, there is an error message, but since you must not be using a command prompt to test your EXE, the window closes before you can see the message. It reads: Cannot find Win32Site at Tk/Widget.pm line 256
in reply to Problem with PAR and Tk::Dropsite
As to the fix, you will find that pp often does not include non-standard modules by itself, but all it needs is a little coaxing:
pp -M Tk::DragDrop::Win32Site test_drag_and_drop.pl
produces a functioning EXE.
I'd like to be able to assign to an luser