(4) If you are using Raspbian(Raspberry OS), you might need to check "Keep the client active even the PM3 hardware is disconnected." in the "Settings" panel
![](keep.png)
## About preload script
The client might refer to some environment variables to load dependencies
For example, the RRG client on Windows requires these environment variables
So the GUI will run "\<client path\>\\setup.bat" before loading the client, which will set the environment variables to the client properly. The script will not affect the system environment variables.
The contents of setup.bat are as follows
```
@echo off
set "HOME=%~dp0"
set "QT_PLUGIN_PATH=%HOME%\libs\"
set "QT_QPA_PLATFORM_PLUGIN_PATH=%QT_PLUGIN_PATH%"
set "PATH=%QT_PLUGIN_PATH%;%QT_PLUGIN_PATH%shell\;%PATH%"
set MSYSTEM=MINGW64
```
You can write your own script by referring to it if you need other client, then input the script path in the "Preload script path" editbox.