Ubuntu – Untrusted application launcher

• Open a terminal with Ctrl + Alt +T then run this command:

  cd ~/Desktop
  sudo chmod +x sublime_text.desktop
  

  Change Desktop to whatever your desktop is called in your language. chmod is a command line command to change permissions, +x make it executable

• or instead you can run:

  cd ~/Desktop
  sudo chown yourusername sublime_text.desktop
  

  chown is command line command to change file owner

Here's a trick you can use. Create a wrapper script for your application that will launch it and capture the error output:

#!/usr/bin/env bash

## Launch 'yourapp' and capture its standard error output
/path/to/yourapp 2>~/myapp.log

Save that as ~/foo.sh and make it executable with chmod +x ~/foo.sh. Now, point your desktop launcher to it instead. Something like:

[Desktop Entry]
Version=2.0
Type=Application
Exec=/home/kevin/foo.sh
Terminal=true
Comment=My app!

That will redirect any error messages to ~/myapp.log and you can examine them at your leisure. You can use 2>>~/myapp.log if you want successive error messages to be appended to the file instead of overwriting it.

As an aside, the reason that the $PATH is different is because you are probably setting your $PATH in ~/.bahsrc which is not read by the graphical environment. It is also a bad idea since the $PATH will be set every time you open a new terminal and that is needless overhead. Use ~/.profile for this instead. For more details on which files are read when see here and for more on which file should be used for what, see here.