Hi Reza, I wouldn't change PATH in a *file manager*, of all programs. That will make the user hate his life should it ever pick up the wrong indirect child executable because of that PATH change--which is opaque the user.
(Otherwise, often, your solution would have been the correct one--especially when there are no indirect children) Please try to find the actual source code line where it invokes gio-launch-desktop . For glib programs, I would suggest invoking gdb --args $(which pcmanfm-qt) --g-fatal-warnings then r and then wait until it crashes, then bt . It will tell you the exact location in the source code where the invocation is. No idea how to do that with Qt programs. Hartmut?
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