1. There are still dos line breaks in your .desktop file
2. the desktop file names
Exec=maecount
as execution path. But your executable is installed in
/usr/bin/maecount/maecount.

Solution
- set
target.path = /usr/bin
instead of
target.path = /usr/bin/maecount
in your .pro file
- or set the full path in the desktop file:
Exec=/usr/bin/maecount

Nicolai