How to fix the intermittent double click behavior of my Ubuntu 16.04 Unity desktop files

Question

I tried and tested @terdon's .desktop file yesterday. Here it is:

"A cleaner way would be to write a .desktop file that launches your script and then double click that. Something like:

[Desktop Entry]
 Exec=/home/user/yourscript.sh
 Terminal=true
 Type=Application

Save that file as foo.desktop in your ~/Desktop folder. That will now appear as an icon there and double clicking it will cause your script to be run in a terminal. Obviously, you need to change /home/user/yourscript.sh to the actual path of your script

When I follow @terdon's suggested steps, the double click behavior of my Ubuntu 16.04 Unity desktop files is intermittent. Sometimes it succeeds, other times it fails to launch the bash script pointed to in the Desktop Entry's exec line.

Why might this occur and how do I fix this problem?

Here is /home/venker/.local/share/applications/fsu.desktop that fails

[Desktop Entry]
Exec=/home/venker/Debug/My_NVR_Recorder.exe.cfg
Terminal=true
Type=Application

Here is /home/venker/Debug/My_NVR_Recorder.exe.cfg that works:

#!/bin/bash
/home/venker/Debug/Generic.cfg -start /home/venker/Debug/My_NVR_Recorder.exe "Recorder Manage"

Here is /home/venker/Debug/Generic.cfg that works:

#!/bin/bash
if [ $1 == "-start" ]; then 
   exec /usr/lib/mono/4.5/mono-service.exe $2 & >& /dev/null
else 
   pkill "$3"
   mystring="/tmp/${2}.lock"
   rm "$mystring"
fi

The above 3 files are rwxr_xr_x protected.

Here is an example of a script file, /home/venker/Debug/My_NVR_Recorder.exe.cfg, that works:

   #!/bin/bash
    exec /usr/lib/mono/4.5/mono-service.exe /home/venker/Debug/My_NVR_Recorder.exe &

Answer 1

Here is how I eliminated the intermittent behavior of double clicking the fsu.desktop.

This is fsu.desktop.

[Desktop Entry]
Name=FSU79
Exec=/usr/bin/gnome-terminal  -e  "bash  -c   /home/wendy/Debug/My_HDR_Recorder.exe.cfg"
Terminal=false
Type=Application

This is /home/wendy/Debug/Generic.cfg

#!/bin/bash

if [ $1 == "-start" ]; then 
    cd /home/wendy/Debug
    exec /usr/lib/mono/4.5/mono-service.exe $2 & >& /dev/null 
else 
   pkill "$3"
   exe=$(echo $2 | grep -oE "[^/]+$")
   mystring="/tmp/${exe}.lock"
   rm "$mystring"
fi

This is /home/wendy/Debug/My_HDR_Recorder.exe.cfg

#!/bin/bash
nohup /home/wendy/Debug/Generic.cfg -start /home/wendy/Debug/My_HDR_Recorder.exe "Recorder Manage"

[EDIT June 2 2016 9:35 pm Could someone let our architect or I know the reason why this totally eliminates the intermittent behavior of double clicking the fsu.desktop? Thank you in advance.]